Auto correct indentation errors in Python

问题

I am trying fix some indentation errors in a Python script. Is there a way to auto correct the errors online or using other utilities?

I hope this error is very familiar, but wanted to avoid this again. Does any editor help in fixing these issues?

IndentationError: expected an indented block

回答1:

It's not possible in general because some cases would be ambiguous:

something = foo()
if something:
    something.bar()
  print("ok") # Only half indented. Should this be inside or outside of the if statement?

It's much better to find an editor with auto-indentation support and make sure you indent properly (even in languages without significant whitespaces, as it makes your code easier to read).

回答2:

You can use reindent.py

For me it worked on some files but it didin't work on others.Give it a try. reindent.py

Uasge:

reindent.py <filename>.py

Change Python (.py) files to use 4-space indents and no hard tab characters.

Also trim excess spaces and tabs from ends of lines, and remove empty lines at the end of files.

回答3:

You can use Spyder IDE

Source Menu -> Fix Indentation

回答4:

This particular error usually occurs when you forget to add an indented block after a statement that needs one (i.e. if or for). You likely forgot to indent the required block or accidentally hit backspace (or something) such as

def sayhello():
print "Hello world!"

Sometimes you don't want any code after an if statement or after try/except statements, but python will require at least one line after them, so you can use the pass keyword

try:
    x= 4/0
except:
    pass

print x

来源：https://stackoverflow.com/questions/30215496/auto-correct-indentation-errors-in-python

标签

python

indentation