Let Python Shell do the indentation correctly.

edit

Could you give us an example of what isn't working for you?

Example:

for i in range(5):
            print(i)

Result:

Traceback (most recent call last):
  Python Shell, prompt 1, line 2
builtins.IndentationError: expected an indented block (2, line 2)

This seems to work for me. I may be confused due to the messed up formatting your comment had due to the slightly braindead options in this forum. I tried to fix that by editing it; I thought at first maybe 'print(i)' was not indented but it seemed to be. If it were not indented, this is not really something we can fix since moving relative indents within a pasted block has cases where there's ambiguity. However, we do re-indent pasted blocks of code in the shells so it removes any leading indent before all the lines. The bottom line is we may need further clarification on this one.