python pythonOCC读取cad文件代码

你可以使用PythonOCC库来读取CAD文件，以下是一个示例代码：

from OCC.Core.STEPControl import STEPControl_Reader
from OCC.Display.SimpleGui import init_display

# Create a STEP reader object
step_reader = STEPControl_Reader()

# Load the CAD file
status = step_reader.ReadFile('path/to/your/cad/file.step')

if status == 0:
    print("Error: Failed to read CAD file")
else:
    print("CAD file loaded successfully")

# Get the number of shapes in the file
num_shapes = step_reader.NbRootsForTransfer()

print("Number of shapes in file:", num_shapes)

# Create a display window
display, start_display, add_menu, add_function_to_menu = init_display()

# Display the shapes in the file
for i in range(1, num_shapes+1):
    shape = step_reader.Shape(i)
    display.DisplayShape(shape)

# Start the display window
start_display()

这个示例代码使用了PythonOCC的STEPControl_Reader类来读取CAD文件，然后在一个显示窗口中显示所有的形状。你需要将 `path/to/your/cad/file.step` 替换为你的CAD文件的路径。