Python bindings for GLFW
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This module provides Python bindings for GLFW (on GitHub: glfw/glfw). It is a ctypes wrapper which keeps very close to the original GLFW API, except for:

  • function names use the pythonic words_with_underscores notation instead of camelCase
  • GLFW_ and glfw prefixes have been removed, as their function is replaced by the module namespace (you can use from glfw.GLFW import * if you prefer the naming convention used by the GLFW C API)
  • structs have been replaced with Python sequences and namedtuples
  • functions like glfwGetMonitors return a list instead of a pointer and an object count
  • Gamma ramps use floats between 0.0 and 1.0 instead of unsigned shorts (use glfw.NORMALIZE_GAMMA_RAMPS=False to disable this)
  • GLFW errors are reported as glfw.GLFWError exceptions if no error callback is set (use glfw.ERROR_REPORTING=False to disable this)
  • instead of a sequence for GLFWimage structs, PIL/pillow Image objects can be used


pyGLFW can be installed using pip:

pip install glfw


The GLFW shared library is included in the Python wheels for Windows, but the correct Microsoft Visual C++ Redistributable will be required:

Alternatively, you can download a shared library built for a runtime already installed on your system from

Linux and macOS

You will need to install the GLFW shared library yourself and should compile GLFW from source (use -DBUILD_SHARED_LIBS=ON).

pyGLFW will search for the library in a list of search paths (including those in LD_LIBRARY_PATH on Linux and DYLD_LIBRARY_PATH on macOS). If you want to use a specific library, you can set the PYGLFW_LIBRARY environment variable to its path.

Example Code

The example from the GLFW documentation ported to pyGLFW:

import glfw

def main():
    # Initialize the library
    if not glfw.init():
    # Create a windowed mode window and its OpenGL context
    window = glfw.create_window(640, 480, "Hello World", None, None)
    if not window:

    # Make the window's context current

    # Loop until the user closes the window
    while not glfw.window_should_close(window):
        # Render here, e.g. using pyOpenGL

        # Swap front and back buffers

        # Poll for and process events


if __name__ == "__main__":