运行first_ai.py脚本出现IndentationError缩进错误的技术求助

Let’s break down the problems you’re facing and fix them step by step:

1. What’s Causing the IndentationError? #

Python uses strict, consistent indentation (either spaces or tabs—never a mix) to define code blocks. The error IndentationError: unindent does not match any outer indentation level means your line NN = Neural_Network() has an indentation that doesn’t align with the code block it’s supposed to belong to. This usually happens when:

• You’ve mixed tabs and spaces for indentation
• The line has more/fewer indentation spaces than the surrounding code in its block

2. Fix the Indentation #

First, make sure your entire script uses the same indentation style (4 spaces is the Python community standard). Then adjust the indentation of NN = Neural_Network() to match the outer code block it’s part of.

For example, if this code is at the top level of your script (not inside a function/conditional), it should look like this:

NN = Neural_Network()
o = NN.forward(X)
print("Sorti predit par l'IA : \n" + str(o))
# Fix the missing + operator here (we'll cover this next)
print("Vrai sorti : \n" + str(y))

If it’s inside a code block like an if statement or function, ensure all lines in the block are indented uniformly:

def run_prediction():
    NN = Neural_Network()
    o = NN.forward(X)
    print("Sorti predit par l'IA : \n" + str(o))
    print("Vrai sorti : \n" + str(y))

3. Bonus: Fix the Hidden Syntax Error #

You also have a small syntax mistake in your last print statement—you’re missing a + between the string and str(y). This would throw an error once you fix the indentation, so we’ve corrected it in the examples above.

Quick Tips to Avoid Indentation Headaches #

• Turn on "show whitespace" in your code editor (VS Code, PyCharm, etc.) to see exactly what indentation characters you’re using
• Set your editor to automatically convert tabs to 4 spaces
• Double-check that all lines in the same code block have identical indentation levels

内容的提问来源于stack exchange，提问作者Tamanegy