Python代码IndentationError错误修复及运行求助

Hey there! Let's get your code up and running smoothly. First, that IndentationError is happening because all code inside your json_maker function needs to be indented—Python uses indentation to define code blocks, so every line after def json_maker(...) must be shifted right (we use 4 spaces as standard).

Beyond the indentation, there are a few missing pieces: undefined variables, uninitialized lists, and a reference to an undefined result object. Here's the fully fixed version with clear explanations:

Fixed Code #

import math
import json

def json_maker(angledeg, collangledeg):
    # Initialize empty lists to store surfaces and output data
    surfaces = []
    outputdata = []
    results = []
    
    # Define your constants (adjust these values to match your actual requirements)
    L = 10.0  # Example length value
    W = 2.0   # Example width value
    d = 1.5   # Example depth value
    emissivity_roof = 0.85
    emissivity_back_panel = 0.1
    
    # Convert degrees to radians (math module functions use radians, not degrees)
    angle = math.radians(angledeg)
    collangle = math.radians(collangledeg)
    
    # Your original logic, now properly indented
    point1 = "0,0,0"
    point2 = str(L) + ",0,0"
    point3 = str(L - W*math.cos(angle)) + "," + str(W*math.sin(angle)) + ",0"
    point4 = str(-W*math.cos(angle)) + "," + str(W*math.sin(angle)) + ",0"
    point5 = "0,0," + str(-d)
    point6 = str(L) + ",0," + str(-d)
    point7 = str(L - W*math.cos(angle)) + "," + str(W*math.sin(angle)) + "," + str(-d)
    point8 = str(-W*math.cos(angle)) + "," + str(W*math.sin(angle)) + "," + str(-d)
    
    surface1 = [point2, point3, point7, point6]
    surface2 = [point1, point5, point8, point4]
    surface3 = [point1, point2, point6, point5]
    surface4 = [point1, point4, point3, point2]
    surface5 = [point5, point6, point7, point8]
    surface6 = [point4, point8, point7, point3]
    
    dict1 = {'emits': 'false', 'diffuse': 'true', 'e': emissivity_roof, "pnts": surface3}
    dict2 = {'emits': 'false', 'diffuse': 'false', 'e': emissivity_back_panel, "pnts": surface2}
    dict3 = {'emits': 'false', 'diffuse': 'false', 'e': emissivity_back_panel, "pnts": surface1}
    dict4 = {'emits': 'false', 'e': 0.0, "pnts": surface4}
    dict5 = {'emits': 'false', 'e': 0.0, "pnts": surface5}
    dict6 = {'emits': 'true', 'collimate': str(-math.sin(collangle)) + ',' + str(-math.cos(collangle)) +',0', 'e': 1.0, "pnts": surface6}
    
    surfaces.extend([dict1, dict2, dict3, dict4, dict5, dict6])
    listentry = {'name': f"{angledeg} {collangledeg}" , 'faces': surfaces}
    outputdata.append(listentry)
    
    # Write JSON output to file
    with open(f'Inf_coll_spec_{int(emissivity_roof*1000)}.json', 'w') as outfile:
        json.dump({ "traces" : outputdata }, outfile)
    
    # Replace undefined 'result' object with a direct list creation
    result_list = [angledeg, collangledeg, dict3, dict2, dict1, dict6]
    results.append(result_list)
    
    # Optional: return results if you need to use them outside the function
    return results

# Example usage to test the function
if __name__ == "__main__":
    json_maker(30, 45)

Key Fixes Breakdown: #

• Indentation: All code inside json_maker is now indented with 4 spaces, which resolves the IndentationError immediately.
• Module Imports: Added import math and import json since your code relies on these libraries for calculations and JSON handling.
• List Initialization: Created empty surfaces, outputdata, and results lists—they were referenced in your original code but never defined.
• Constant Values: Added example values for L, W, d, and emissivity constants—adjust these to match your actual project requirements.
• Radian Conversion: Converted input degrees to radians, since Python's math.sin/math.cos functions require radians instead of degrees.
• Undefined result Object: Replaced the uninitialized result.list with a direct list (result_list), as result was never declared in your original code.
• Readable String Formatting: Used f-strings for cleaner, more readable string construction (optional but improves code maintainability).

To run this, save it as JSON_Project.py and execute it in your terminal/command prompt with:

python JSON_Project.py

内容的提问来源于stack exchange，提问作者Vibhu Sharma