PyGame : drawing SVG image on pydroid 3.

This Pygame script displays an SVG image and status text on Android. It reads the SVG into memory as binary data using io.BytesIO, loads it via pygame.image.load(), scales it by 200%, and dynamically centers it below the status text to prevent visual overlap.

Let's see the source code:

import io
import os
import pygame
import xml.etree.ElementTree as ET

pygame.init()
pygame.font.init()

WIDTH, HEIGHT = 800, 600
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Centered Scaled SVG - Pygame Android")

font = pygame.font.SysFont("Arial", 28)
svg_path = "/storage/emulated/0/Download/imagine.svg"

scaled_svg = None
status_message = ""

def load_svg_to_pygame(path):
    with open(path, "rb") as f:
        svg_data = f.read()
    binary_buffer = io.BytesIO(svg_data)
    return pygame.image.load(binary_buffer)

if not os.path.exists(svg_path):
    status_message = f"File does not exist at:\n{svg_path}"
else:
    try:
        raw_img = load_svg_to_pygame(svg_path)
        
        # Explicit 2.0x enlargement multiplier
        target_w = int(raw_img.get_width() * 2.0)
        target_h = int(raw_img.get_height() * 2.0)
        
        scaled_svg = pygame.transform.scale(raw_img, (target_w, target_h))
        status_message = f"Success: SVG enlarged to 2X ({target_w}x{target_h}px)!"
    except Exception as e:
        try:
            tree = ET.parse(svg_path)
            root = tree.getroot()
            
            w = int(float(root.attrib.get('width', 300))) * 2
            h = int(float(root.attrib.get('height', 300))) * 2
            
            scaled_svg = pygame.Surface((w, h), pygame.SRCALPHA)
            scaled_svg.fill((200, 200, 200, 255))
            status_message = f"Native format error: {e}\nGenerated Fallback ({w}x{h})"
        except Exception as err_xml:
            status_message = f"Total processing error:\n{err_xml}"

def draw_text(text, x, y, color=(0, 255, 100)):
    lines = text.split('\n')
    for i, line in enumerate(lines):
        text_render = font.render(line, True, color)
        screen.blit(text_render, (x, y + i * 34))
    return y + (len(lines) * 34)

running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    screen.fill((30, 30, 30))

    # 1. Render text at the very top
    text_end_y = draw_text(status_message, 20, 20)

    # 2. Place 2X SVG completely below text area, centered horizontally
    if scaled_svg:
        offset_y = text_end_y + 40  # Ensures a mandatory 40px gap below text
        center_x = WIDTH // 2
        center_y = offset_y + (scaled_svg.get_height() // 2)

        svg_rect = scaled_svg.get_rect(center=(center_x, center_y))
        screen.blit(scaled_svg, svg_rect)

    pygame.display.flip()

pygame.quit()

Python-CE : How to fix DPI pygame‑ce on Python 3.13.0 and test your DPI monitors.

Today, I tried the high-DPI displays, and because I have Python 3.13.0, some features are not supported, but I fixed them.

This script is specifically designed for:

• Python 3.13
• pygame‑ce 2.5.7
• SDL 2.32.x (bundled inside pygame‑ce)

These versions have incomplete DPI support in the Python bindings.

Many DPI‑related functions that exist in SDL2 are not exposed in pygame‑ce for Python 3.13.

Examples of missing functions in your build:

• Window.drawable_size
• Window.from_display_surface
• Renderer.get_output_size
• pygame.display.get_window()

Because these functions are missing, PyGame-CE cannot read DPI information directly.

I adopted the ctypes solution because ctypes allows Python to call native Windows API functions directly.

I used these native Windows API:

• EnumDisplayMonitors → to list all monitors
• GetDpiForMonitor → to read DPI for each monitor
• SetProcessDpiAwareness → to enable DPI awareness

This bypasses pygame‑ce completely and talks directly to Windows, but pygame-ce can be used only for window creation and drawing.

ctypes is the only reliable way to get real DPI values on your current setup.

The script creates two independent SDL2 windows.

Drag each window to a different monitor.

Each window will show different DPI values.

You can compare scaling visually and numerically.

This script is designed for Python 3.13 + pygame‑ce 2.5.7, where DPI functions are missing.

I use ctypes to call Windows DPI APIs directly because pygame‑ce cannot access DPI.

The script creates two windows, each showing DPI and visual scaling tests.

With one monitor, both windows show the same DPI.

With multiple monitors, each window shows the DPI of its monitor.

This is the most advanced DPI test possible on your current setup.

I have only one monitor, and the result is the same.

Let's see the result:

Let's see the script:

import pygame
import pygame._sdl2 as sdl2
import ctypes
import sys

pygame.init()

# Windows DPI API
user32 = ctypes.windll.user32
shcore = ctypes.windll.shcore

# Enable per-monitor DPI awareness
try:
    shcore.SetProcessDpiAwareness(2)
except:
    pass

# --- Monitor enumeration ---
MONITORS = []

def _monitor_enum_proc(hmonitor, hdc, lprcMonitor, lparam):
    MONITORS.append(hmonitor)
    return 1

MonitorEnumProc = ctypes.WINFUNCTYPE(
    ctypes.c_int,
    ctypes.c_ulong,
    ctypes.c_ulong,
    ctypes.POINTER(ctypes.c_int * 4),
    ctypes.c_double
)

user32.EnumDisplayMonitors(0, 0, MonitorEnumProc(_monitor_enum_proc), 0)

def get_monitor_dpi(index):
    if index >= len(MONITORS):
        index = 0  # fallback for single-monitor setups

    dpi_x = ctypes.c_uint()
    dpi_y = ctypes.c_uint()

    shcore.GetDpiForMonitor(MONITORS[index], 0, ctypes.byref(dpi_x), ctypes.byref(dpi_y))
    return dpi_x.value, dpi_y.value


# --- Create two SDL2 windows ---
window1 = sdl2.Window("Make test on first monitor", size=(600, 400), position=(100, 100))
window2 = sdl2.Window("Make test on second monitor", size=(600, 400), position=(800, 100))

surface1 = window1.get_surface()
surface2 = window2.get_surface()

font = pygame.font.SysFont("Arial", 22)
clock = pygame.time.Clock()

# --- Drawing helpers ---
def draw_grid(surface, spacing=20):
    w, h = surface.get_size()
    for x in range(0, w, spacing):
        pygame.draw.line(surface, (60, 60, 60), (x, 0), (x, h))
    for y in range(0, h, spacing):
        pygame.draw.line(surface, (60, 60, 60), (0, y), (w, y))

def draw_square_test(surface, dpi_scale):
    size = int(50 * dpi_scale)
    pygame.draw.rect(surface, (200, 50, 50), (20, 200, size, size), 2)

# --- Main loop ---
while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()

    dpi0 = get_monitor_dpi(0)
    dpi1 = get_monitor_dpi(1)

    scale0 = dpi0[0] / 96
    scale1 = dpi1[0] / 96

    # --- Window 1 ---
    surface1.fill((25, 25, 25))
    draw_grid(surface1)
    draw_square_test(surface1, scale0)

    y = 20
    for line in [
        "Advanced DPI Test",
        f"Monitor index: 0",
        f"DPI X: {dpi0[0]}",
        f"DPI Y: {dpi0[1]}",
        f"Scale factor: {scale0:.2f}x",
        "Red square = 50px scaled",
        "Grid = 20px spacing"
    ]:
        surf = font.render(line, True, (255, 255, 255))
        surface1.blit(surf, (20, y))
        y += 28

    window1.flip()

    # --- Window 2 ---
    surface2.fill((25, 25, 25))
    draw_grid(surface2)
    draw_square_test(surface2, scale1)

    y = 20
    for line in [
        "Advanced DPI Test",
        f"Monitor index: 1",
        f"DPI X: {dpi1[0]}",
        f"DPI Y: {dpi1[1]}",
        f"Scale factor: {scale1:.2f}x",
        "Red square = 50px scaled",
        "Grid = 20px spacing"
    ]:
        surf = font.render(line, True, (255, 255, 255))
        surface2.blit(surf, (20, y))
        y += 28

    window2.flip()

    clock.tick(60)

PyGame : particles with the pygame and pyqt6 !

Today, I test one python script with pygame and pyqt6. The python script use classes and show particles. See the result:

These are python and pygame-ce, but the source code use pygame.

Python 3.13.0 (tags/v3.13.0:60403a5, Oct  7 2024, 09:38:07) [MSC v.1941 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import pygame
pygame-ce 2.5.7 (SDL 2.32.10, Python 3.13.0)
>>> print(pygame.version.ver)
2.5.7
>>> print(pygame.version.SDL)
2.32.10

This is the source code:

import sys
import random
import pygame
from pygame import Vector2
from PyQt6.QtWidgets import (
    QApplication, QWidget, QVBoxLayout, QHBoxLayout,
    QSlider, QLabel, QSizePolicy
)
from PyQt6.QtCore import Qt, QTimer
from PyQt6.QtGui import QImage, QPainter

class Particle:
    def __init__(self, pos, vel, color):
        self.pos = Vector2(pos)
        self.vel = Vector2(vel)
        self.color = color
        self.life = 255

    def update(self, gravity):
        self.vel.y += gravity
        self.pos += self.vel
        self.life -= 2

    def draw(self, surf):
        if self.life > 0:
            pygame.draw.circle(
                surf,
                self.color,
                (int(self.pos.x), int(self.pos.y)),
                4
            )

class PygameWidget(QWidget):
    def __init__(self):
        super().__init__()

        pygame.init()
        pygame.display.init()

        self.w, self.h = 900, 600
        self.surface = pygame.Surface((self.w, self.h))

        self.particles = []
        self.spawn_rate = 5
        self.gravity = 0.1

        self.setSizePolicy(
            QSizePolicy.Policy.Expanding,
            QSizePolicy.Policy.Expanding
        )

        self.timer = QTimer()
        self.timer.timeout.connect(self.game_loop)
        self.timer.start(16)  # ~60 FPS

    def spawn_particles(self):
        for _ in range(self.spawn_rate):
            pos = (self.w // 2, self.h // 2)
            vel = (random.uniform(-2, 2), random.uniform(-2, 2))
            color = (255, random.randint(100, 255), 0)
            self.particles.append(Particle(pos, vel, color))

    def game_loop(self):
        self.surface.fill((20, 20, 20))

        self.spawn_particles()

        alive = []
        for p in self.particles:
            p.update(self.gravity)
            p.draw(self.surface)
            if p.life > 0:
                alive.append(p)

        self.particles = alive

        self.update()

    def paintEvent(self, event):
        data = pygame.image.tobytes(self.surface, "RGB")
        img = QImage(
            data,
            self.w,
            self.h,
            self.w * 3,
            QImage.Format.Format_RGB888
        )

        painter = QPainter(self)
        painter.drawImage(0, 0, img)
        painter.end()

    def resizeEvent(self, event):
        self.w = self.width()
        self.h = self.height()
        self.surface = pygame.Surface((self.w, self.h))

class MainWindow(QWidget):
    def __init__(self):
        super().__init__()

        self.setWindowTitle("PyQt6 + pygame Particle System")

        main_layout = QVBoxLayout()

        # widget-ul pygame – ocupă tot spațiul
        self.pg_widget = PygameWidget()
        main_layout.addWidget(self.pg_widget, stretch=1)

        # panou de controale jos
        control_panel = QVBoxLayout()

        # ----- slider spawn rate -----
        spawn_layout = QHBoxLayout()
        spawn_label = QLabel("Spawn:")
        self.spawn_value = QLabel("5")

        spawn_slider = QSlider(Qt.Orientation.Horizontal)
        spawn_slider.setRange(1, 50)
        spawn_slider.setValue(5)
        spawn_slider.valueChanged.connect(self.update_spawn_rate)

        spawn_layout.addWidget(spawn_label)
        spawn_layout.addWidget(spawn_slider)
        spawn_layout.addWidget(self.spawn_value)

        # ----- slider gravity -----
        gravity_layout = QHBoxLayout()
        gravity_label = QLabel("Gravity:")
        self.gravity_value = QLabel("0.10")

        gravity_slider = QSlider(Qt.Orientation.Horizontal)
        gravity_slider.setRange(0, 50)
        gravity_slider.setValue(10)
        gravity_slider.valueChanged.connect(self.update_gravity)

        gravity_layout.addWidget(gravity_label)
        gravity_layout.addWidget(gravity_slider)
        gravity_layout.addWidget(self.gravity_value)

        control_panel.addLayout(spawn_layout)
        control_panel.addLayout(gravity_layout)

        main_layout.addLayout(control_panel)

        self.setLayout(main_layout)

    def update_spawn_rate(self, v):
        self.pg_widget.spawn_rate = v
        self.spawn_value.setText(str(v))

    def update_gravity(self, v):
        g = v / 100.0
        self.pg_widget.gravity = g
        self.gravity_value.setText(f"{g:.2f}")

if __name__ == "__main__":
    app = QApplication(sys.argv)
    w = MainWindow()
    w.resize(1000, 800)
    w.show()
    sys.exit(app.exec())

PyGame-CE : First test example with pygame-ce-2.5.7

The biggest technical difference in version 2.5.7 is the expanded use of SIMD (Single Instruction, Multiple Data)

It utilizes modern CPU instructions like AVX2 (Intel/AMD) and NEON (ARM/Apple Silicon).

Pixel-level operations—such as blending, alpha-compositing, and surface scaling 30% to 100% faster than the original Pygame. If you are doing real-time lighting or heavy particle effects

Let's install with:

python -m pip install pygame-ce
WARNING: Ignoring invalid distribution ~adquery-ocp (C:\Python313_64bit\Lib\site-packages)
Collecting pygame-ce
  Downloading pygame_ce-2.5.7-cp313-cp313-win_amd64.whl.metadata (11 kB)
Downloading pygame_ce-2.5.7-cp313-cp313-win_amd64.whl (10.4 MB)
   ---------------------------------------- 10.4/10.4 MB 2.8 MB/s  0:00:03
WARNING: Ignoring invalid distribution ~adquery-ocp (C:\Python313_64bit\Lib\site-packages)
Installing collected packages: pygame-ce
WARNING: Ignoring invalid distribution ~adquery-ocp (C:\Python313_64bit\Lib\site-packages)
Successfully installed pygame-ce-2.5.7

python
Python 3.13.0 (tags/v3.13.0:60403a5, Oct  7 2024, 09:38:07) [MSC v.1941 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import pygame
pygame-ce 2.5.7 (SDL 2.32.10, Python 3.13.0)
>>> print(pygame.version.ver)      # Should be 2.5.7
2.5.7
>>> print(pygame.version.vernum)   # Should show the CE suffix
2.5.7

Comparison Summary: Pygame-CE 2.5.7 vs. Legacy Pygame

Feature	Pygame-CE 2.5.7	Legacy Pygame
Rendering Engine	Highly optimized C-code with SIMD	Basic SDL2 wrappers
OS Integration	Full (System notifications, Dark Mode)	Minimal
Updates	Monthly (Active community)	Yearly or less (Stagnant)
Math & Rects	Modernized, faster collision logic	Older, slower C implementation
Multi-threading	Ready for Python 3.13+ "Free-thread"	Limited by the GIL

Next python script demonstrates a real-time bridge between a graphical user interface and the operating system's memory by utilizing the Pygame-CE scrap module to exchange text data with the system clipboard via keyboard inputs.

import pygame

# 1. Initialize Pygame
pygame.init()

# 2. Create the window (CRITICAL: Scrap needs a window to talk to the OS)
screen = pygame.display.set_mode((600, 400))
pygame.display.set_caption(f"Pygame-CE 2.5.7 Scrap Fix")

# 3. Initialize scrap safely
try:
    pygame.scrap.init()
except Exception:
    # Some builds initialize this automatically with display.set_mode
    pass

font = pygame.font.SysFont("Arial", 22)
clipboard_text = "Press 'V' to paste"
status_message = "Found: pygame.scrap.get_text"

running = True
while running:
    screen.fill((30, 30, 30))

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        
        if event.type == pygame.KEYDOWN:
            # COPY logic using scrap.put_text
            if event.key == pygame.K_c:
                msg = "Hello from Pygame-CE 2.5.7 Scrap!"
                try:
                    # Modern CE method for text
                    pygame.scrap.put_text(msg)
                    status_message = "Copied via scrap.put_text!"
                except AttributeError:
                    # Fallback for some 2.5.7 sub-builds
                    pygame.scrap.put(pygame.SCRAP_TEXT, msg.encode("utf-8"))
                    status_message = "Copied via scrap.put (fallback)!"
            
            # PASTE logic using scrap.get_text
            if event.key == pygame.K_v:
                # Based on your discovery, this IS the method
                txt = pygame.scrap.get_text()
                if txt:
                    # scrap.get_text() usually returns a string directly
                    clipboard_text = txt.replace('\x00', '') # Clean null bytes
                    status_message = "Pasted successfully!"
                else:
                    status_message = "Clipboard is empty."

    # Rendering
    surf_clip = font.render(f"Content: {clipboard_text}", True, (255, 255, 255))
    surf_stat = font.render(status_message, True, (0, 255, 0))
    screen.blit(surf_clip, (50, 150))
    screen.blit(surf_stat, (50, 250))
    
    pygame.display.flip()

pygame.quit()

PyGame : How to use Box2D python package - part 002.

I've written a tutorial in the past about the python package called box2d, see this tutorial.

Today I will be more precise and I will show you a source code related to 2D simulation.

I installed the python package in the Fedora 35 Linux distribution with the DNF tool:

[root@fedora mythcat]# dnf search pybox2d
...
python3-pybox2d.x86_64 : A 2D rigid body simulation library for Python
[root@fedora mythcat]# dnf install python3-pybox2d.x86_64
Last metadata expiration check: 0:18:37 ago on Sun 16 Jan 2022 10:15:43 AM EET.
Dependencies resolved.
...
Installed:
  python3-pybox2d-2.3.2-17.fc35.x86_64                                          

Complete!

I created the working folders and the first python file named example001.py:

[mythcat@fedora ~]$ mkdir PyGameProjects
[mythcat@fedora ~]$ cd PyGameProjects/
[mythcat@fedora PyGameProjects]$ touch example001.py
[mythcat@fedora PyGameProjects]$ vi example001.py

It contains a default source code:

from Box2D import (b2PolygonShape, b2World)
# create word 
world = b2World()  
# set the world 
groundBody = world.CreateStaticBody(position=(0, -10),
                                    shapes=b2PolygonShape(box=(50, 10)),
                                    )
# create a dynamic body at position
body = world.CreateDynamicBody(position=(0, 4))

# add and set a box fixture onto it with a nonzero density, so it will move
box = body.CreatePolygonFixture(box=(1, 1), density=1, friction=0.3)

# use a time step of 1/60 of a second
timeStep = 1.0 / 60

# simulation scenario with 6 velocity/2 position iterations
vel_iters, pos_iters = 6, 2

# the game loop.
for i in range(60):
    # use step of simulation
    world.Step(timeStep, vel_iters, pos_iters)

    # clear body forces even I didn't apply any forces
    world.ClearForces()

    # print the position and angle of the body.
    print(body.position, body.angle)

The result of the run looks like this:

...
b2Vec2(1.8719e-08,1.01496) 6.208252216310939e-06
b2Vec2(1.90152e-08,1.01497) 4.9494738050270826e-06

For a more complex example we created two python files.

One is a class for a box and a file that calls the class.

The first file contains the following source code is named box.py:

import pygame
from Box2D import (b2EdgeShape, b2FixtureDef, b2PolygonShape, b2_dynamicBody,
                   b2_kinematicBody, b2_staticBody, b2World)

class Box:
    def __init__(self, x, y, l, world):
        self.x = x / l
        self.y = y / l
        self.w = .2
        self.h = .2

        self.world = world
        self.attachment = self.world.CreateDynamicBody(
            position=(self.x, self.y),
            fixtures=b2FixtureDef(
                shape=b2PolygonShape(box=(self.w, self.h)), density=0.4, friction = 0.4),)
                
    def display(self, screen):
        for body in self.world.bodies:
            for fixture in body.fixtures:
                shape = fixture.shape
                vertices = [(body.transform * v) * 20 for v in shape.vertices]
                pygame.draw.polygon(screen, 'azure', vertices)
                pygame.draw.polygon(screen, 'blue', vertices,width=3)

The file calling the class has the following source code:

import pygame
from box import Box
from Box2D import b2World

l = 20
fps = 60
frame_rate = 1.0 / fps

pygame.init()
screen = pygame.display.set_mode((640, 480))
pygame.display.set_caption("Physics")
clock = pygame.time.Clock()

# A list for all of our rectangles
list_boxes = []
world = b2World(gravity=(0, 9.8), doSleep=False)

close = False

while not close:
    
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            close = True
    
    screen.fill('white')

    click, _, _ = pygame.mouse.get_pressed()    
    if click == 1:
        x,y = pygame.mouse.get_pos()
        box = Box(x, y, l, world)
        list_boxes.append(box)

    for box in list_boxes:
        box.display(screen)

    world.Step(frame_rate, 10, 10)
    pygame.display.flip()
    clock.tick(fps)

pygame.quit()

The result of running this file looks like this screenshot with some squares moving to the bottom:

PyGame : Game pygame-medic-snake.

I made this game because I had a broken tooth and now I haven't found a dentist for the holidays.
Until I get the pain or I get to the dentist I started writing this game.
The game is simple to use and comes today with version 0.0.1.
See the full source code at my GitHub account.

PyGame : How to use Box2D python package - part 001.

About this python package the official GitHub comes with this intro:
pybox2d is a 2D physics library for your games and simple simulations. It's based on the Box2D library, written in C++. It supports several shape types (circle, polygon, thin line segments), and quite a few joint types (revolute, prismatic, wheel, etc.).
In the first step, you need to install the swig Fedora package.
About swig the official webpage tells us:
SWIG is an interface compiler that connects programs written in C and C++ with scripting languages such as Perl, Python, Ruby, and Tcl. It works by taking the declarations found in C/C++ header files and using them to generate the wrapper code that scripting languages need to access the underlying C/C++ code. In addition, SWIG provides a variety of customization features that let you tailor the wrapping process to suit your application.
I install it with DNF tool:

[root@desk mythcat]# dnf install swig.x86_64
Last metadata expiration check: 0:00:43 ago on Thu 26 Dec 2019 10:40:53 PM EET.
Dependencies resolved.
====================================================================================
 Package         Architecture      Version                 Repository          Size
====================================================================================
Installing:
 swig            x86_64            4.0.1-3.fc31            updates            1.4 M

Transaction Summary
====================================================================================
Install  1 Package

Total download size: 1.4 M
Installed size: 5.7 M
Is this ok [y/N]: y
Downloading Packages:
swig-4.0.1-3.fc31.x86_64.rpm                        1.7 MB/s | 1.4 MB     00:00    
------------------------------------------------------------------------------------
Total                                               863 kB/s | 1.4 MB     00:01     
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                            1/1 
  Installing       : swig-4.0.1-3.fc31.x86_64                                   1/1 
  Running scriptlet: swig-4.0.1-3.fc31.x86_64                                   1/1 
  Verifying        : swig-4.0.1-3.fc31.x86_64                                   1/1 

Installed:
  swig-4.0.1-3.fc31.x86_64                                                          

Complete!

I used the last version of the Box2D python package:

[mythcat@desk ~]$ git clone https://github.com/pybox2d/pybox2d
Cloning into 'pybox2d'...
remote: Enumerating objects: 2922, done.
remote: Total 2922 (delta 0), reused 0 (delta 0), pack-reused 2922
Receiving objects: 100% (2922/2922), 9.12 MiB | 4.04 MiB/s, done.
Resolving deltas: 100% (1832/1832), done.
[mythcat@desk ~]$ cd pybox2d/
[mythcat@desk pybox2d]$ python setup.py clean
Using setuptools (version 41.2.0).
running clean
[mythcat@desk pybox2d]$ python setup.py build
Using setuptools (version 41.2.0).
running build
running build_py
creating build
creating build/lib.linux-x86_64-3.7
creating build/lib.linux-x86_64-3.7/Box2D
...
[mythcat@desk pybox2d]$ python setup.py install --user
Using setuptools (version 41.2.0).
running install
running bdist_egg
running egg_info
...
Processing dependencies for Box2D==2.3.2
Finished processing dependencies for Box2D==2.3.2

Let's try these two examples from the official webpage:

[mythcat@desk ~]$ python3 simple_01.py
pygame 1.9.6
Hello from the pygame community. https://www.pygame.org/contribute.html
Done!
[mythcat@desk ~]$ python3 simple_02.py
pygame 1.9.6
Hello from the pygame community. https://www.pygame.org/contribute.html
Done!

These screenshots results for the first script:

... and for the second one:

PyGame : Install and test pygame on Fedora 31 distro.

The install of the python package named pygame on Fedora Linux distro is very simple with the pip3 tool for python 3 version.

[mythcat@desk ~]$ pip3 install pygame --user
Collecting pygame
...
Installing collected packages: pygame
Successfully installed pygame-1.9.6

After install you can check this python package with this source code:

[mythcat@desk ~]$ python3 
Python 3.7.5 (default, Dec 15 2019, 17:54:26) 
[GCC 9.2.1 20190827 (Red Hat 9.2.1-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pygame
pygame 1.9.6
Hello from the pygame community. https://www.pygame.org/contribute.html
>>> from pygame import *
>>> print(pygame.__version__)
1.9.6
>>> dir(pygame)
['ACTIVEEVENT', 'ANYFORMAT', 'ASYNCBLIT', 'AUDIODEVICEADDED', 'AUDIODEVICEREMOVED', 
'AUDIO_ALLOW_ANY_CHANGE', 'AUDIO_ALLOW_CHANNELS_CHANGE', 'AUDIO_ALLOW_FORMAT_CHANGE',
 'AUDIO_ALLOW_FREQUENCY_CHANGE', 'AUDIO_S16', 'AUDIO_S16LSB', 'AUDIO_S16MSB', 'AUDIO_S16SYS',
 'AUDIO_S8', 'AUDIO_U16', 'AUDIO_U16LSB', 'AUDIO_U16MSB', 'AUDIO_U16SYS', 'AUDIO_U8', 
'BIG_ENDIAN', 'BLEND_ADD', 'BLEND_MAX', 'BLEND_MIN', 'BLEND_MULT', 'BLEND_PREMULTIPLIED', 'BLEND_RGBA_ADD',
 'BLEND_RGBA_MAX', 'BLEND_RGBA_MIN', 'BLEND_RGBA_MULT', 'BLEND_RGBA_SUB', 'BLEND_RGB_ADD', 'BLEND_RGB_MAX',
 'BLEND_RGB_MIN', 'BLEND_RGB_MULT', 'BLEND_RGB_SUB', 'BLEND_SUB', 'BUTTON_LEFT', 'BUTTON_MIDDLE', 'BUTTON_RIGHT',
 'BUTTON_WHEELDOWN', 'BUTTON_WHEELUP', 'BUTTON_X1', 'BUTTON_X2', 'BufferError', 'BufferProxy', 'Color',
 'DOUBLEBUF', 'DROPBEGIN', 'DROPCOMPLETE', 'DROPFILE', 'DROPTEXT', 'FINGERDOWN', 'FINGERMOTION', 'FINGERUP',
 'FULLSCREEN', 'GL_ACCELERATED_VISUAL', 'GL_ACCUM_ALPHA_SIZE', 'GL_ACCUM_BLUE_SIZE', 'GL_ACCUM_GREEN_SIZE',
 'GL_ACCUM_RED_SIZE', 'GL_ALPHA_SIZE', 'GL_BLUE_SIZE', 'GL_BUFFER_SIZE', 'GL_DEPTH_SIZE', 'GL_DOUBLEBUFFER',
 'GL_GREEN_SIZE', 'GL_MULTISAMPLEBUFFERS', 'GL_MULTISAMPLESAMPLES', 'GL_RED_SIZE', 'GL_STENCIL_SIZE', 'GL_STEREO',
 'GL_SWAP_CONTROL', 'HAT_CENTERED', 'HAT_DOWN', 'HAT_LEFT', 'HAT_LEFTDOWN', 'HAT_LEFTUP', 'HAT_RIGHT', 
'HAT_RIGHTDOWN', 'HAT_RIGHTUP', 'HAT_UP', 'HAVE_NEWBUF', 'HWACCEL', 'HWPALETTE', 'HWSURFACE', 'IYUV_OVERLAY',
 'JOYAXISMOTION', 'JOYBALLMOTION', 'JOYBUTTONDOWN', 'JOYBUTTONUP', 'JOYHATMOTION', 'KEYDOWN', 'KEYUP', 'KMOD_ALT',
 'KMOD_CAPS', 'KMOD_CTRL', 'KMOD_LALT', 'KMOD_LCTRL', 'KMOD_LMETA', 'KMOD_LSHIFT', 'KMOD_META', 'KMOD_MODE',
 'KMOD_NONE', 'KMOD_NUM', 'KMOD_RALT', 'KMOD_RCTRL', 'KMOD_RMETA', 'KMOD_RSHIFT', 'KMOD_SHIFT', 'K_0', 'K_1',
 'K_2', 'K_3', 'K_4', 'K_5', 'K_6', 'K_7', 'K_8', 'K_9', 'K_AMPERSAND', 'K_ASTERISK', 'K_AT', 'K_BACKQUOTE',
 'K_BACKSLASH', 'K_BACKSPACE', 'K_BREAK', 'K_CAPSLOCK', 'K_CARET', 'K_CLEAR', 'K_COLON', 'K_COMMA', 'K_DELETE',
 'K_DOLLAR', 'K_DOWN', 'K_END', 'K_EQUALS', 'K_ESCAPE', 'K_EURO', 'K_EXCLAIM', 'K_F1', 'K_F10', 'K_F11', 'K_F12',
 'K_F13', 'K_F14', 'K_F15', 'K_F2', 'K_F3', 'K_F4', 'K_F5', 'K_F6', 'K_F7', 'K_F8', 'K_F9', 'K_FIRST', 'K_GREATER',
 'K_HASH', 'K_HELP', 'K_HOME', 'K_INSERT', 'K_KP0', 'K_KP1', 'K_KP2', 'K_KP3', 'K_KP4', 'K_KP5', 'K_KP6', 'K_KP7',
 'K_KP8', 'K_KP9', 'K_KP_DIVIDE', 'K_KP_ENTER', 'K_KP_EQUALS', 'K_KP_MINUS', 'K_KP_MULTIPLY', 'K_KP_PERIOD',
 'K_KP_PLUS', 'K_LALT', 'K_LAST', 'K_LCTRL', 'K_LEFT', 'K_LEFTBRACKET', 'K_LEFTPAREN', 'K_LESS', 'K_LMETA', 
'K_LSHIFT', 'K_LSUPER', 'K_MENU', 'K_MINUS', 'K_MODE', 'K_NUMLOCK', 'K_PAGEDOWN', 'K_PAGEUP', 'K_PAUSE',
 'K_PERIOD', 'K_PLUS', 'K_POWER', 'K_PRINT', 'K_QUESTION', 'K_QUOTE', 'K_QUOTEDBL', 'K_RALT', 'K_RCTRL',
 'K_RETURN', 'K_RIGHT', 'K_RIGHTBRACKET', 'K_RIGHTPAREN', 'K_RMETA', 'K_RSHIFT', 'K_RSUPER', 'K_SCROLLOCK',
 'K_SEMICOLON', 'K_SLASH', 'K_SPACE', 'K_SYSREQ', 'K_TAB', 'K_UNDERSCORE', 'K_UNKNOWN', 'K_UP', 'K_a', 'K_b',
 'K_c', 'K_d', 'K_e', 'K_f', 'K_g', 'K_h', 'K_i', 'K_j', 'K_k', 'K_l', 'K_m', 'K_n', 'K_o', 'K_p', 'K_q',
 'K_r', 'K_s', 'K_t', 'K_u', 'K_v', 'K_w', 'K_x', 'K_y', 'K_z', 'LIL_ENDIAN', 'MOUSEBUTTONDOWN', 'MOUSEBUTTONUP',
 'MOUSEMOTION', 'MOUSEWHEEL', 'MULTIGESTURE', 'Mask', 'NOEVENT', 'NOFRAME', 'NUMEVENTS', 'OPENGL', 'OPENGLBLIT',
 'Overlay', 'PREALLOC', 'PixelArray', 'PygameVersion', 'QUIT', 'RESIZABLE', 'RLEACCEL', 'RLEACCELOK', 'Rect',
 'SCRAP_BMP', 'SCRAP_CLIPBOARD', 'SCRAP_PBM', 'SCRAP_PPM', 'SCRAP_SELECTION', 'SCRAP_TEXT', 'SRCALPHA',
 'SRCCOLORKEY', 'SWSURFACE', 'SYSWMEVENT', 'Surface', 'SurfaceType', 'TEXTEDITING', 'TEXTINPUT',
 'TIMER_RESOLUTION', 'USEREVENT', 'USEREVENT_DROPFILE', 'UYVY_OVERLAY', 'VIDEOEXPOSE', 'VIDEORESIZE',
 'Vector2', 'Vector3', 'WINDOWEVENT', 'WINDOWEVENT_CLOSE', 'YUY2_OVERLAY', 'YV12_OVERLAY', 'YVYU_OVERLAY',
 '__builtins__', '__cached__', '__color_constructor','__color_reduce', '__doc__', '__file__', '__loader__',
 '__name__', '__package__', '__path__', '__rect_constructor', '__rect_reduce', '__spec__', '__version__',
'_numpysndarray', '_numpysurfarray', 'base', 'bufferproxy', 'cdrom', 'color', 'colordict', 'compat',
 'constants', 'cursors', 'display', 'draw', 'encode_file_path', 'encode_string', 'error', 'event', 'fastevent',
 'font', 'get_array_interface', 'get_error', 'get_init', 'get_sdl_byteorder', 'get_sdl_version', 'image',
 'init', 'joystick', 'key', 'mask', 'math', 'mixer', 'mixer_music', 'mouse', 'movie', 'overlay',
 'packager_imports','pixelarray', 'pixelcopy', 'quit', 'rect', 'register_quit', 'rev', 'rwobject',
 'scrap', 'segfault', 'set_error', 'sndarray', 'sprite', 'surface', 'surfarray', 'sysfont', 'threads',
 'time', 'transform', 'ver', 'vernum', 'version', 'warn_unwanted_files']

This shows us all the features of the pygame package.

PyGame : Keyboard on pygame

This is a short example of how to use the keyboard in pygame.

import os
import sys
import pygame
from pygame import *
def main():
   pygame.init()
   ecran = pygame.display.set_mode((640, 480))
   ruleaza= True
   action = "Help!"
   while ruleaza is True:
       for event in pygame.event.get():
           if event.type == QUIT:
               ruleaza == False
           elif event.type == KEYDOWN:
               if event.key == K_ESCAPE:
                   ruleaza = False
               elif event.key == K_LEFT:
                   action="L"
               elif event.key == K_RIGHT:
                   action="R"
           print action
main()