I think I found a bug in the new print syntax suggestion introduced by https://bugs.python.org/issue30597.


When the following code is executed by Python 3.6.3 inside of a .py file:

    def f():
        print '%d' % 2

, then Python gives the following error message:

    SyntaxError: Missing parentheses in call to 'print'. Did you mean print(int '%d' % 2)?

The "int" next to the left brace of the suggested print function is obviously wrong.
The expected message would be:

    SyntaxError: Missing parentheses in call to 'print'. Did you mean print('%d' % 2)?

Using other values or "%s" in the formatted string in a print statement produces the same wrong message.
This bug only seems to happen when the print statement is inside of a function AND when it is is run inside of a .py file. At least I could not reproduce it in the python3 REPL or outside of a function.

I am attaching the minimal example file in this bug report. Running it with "$ python3 print.py" should show the mentioned bug.

Given the symptoms (stripping 4 spaces + "pr" from the start of the line, leaving "int " behind), it looks like we're not stripping the leading whitespace when determining the text to include in the suggested print() call.

To reproduce this at the REPL, you can use an if statement (first example uses a 4 space indent, the second uses an 8 space indent):

```
>>> if 1:
...     print 123
  File "<stdin>", line 2
    print 123
            ^
SyntaxError: Missing parentheses in call to 'print'. Did you mean print(int 123)?
>>> if 1:
...         print 123
  File "<stdin>", line 2
    print 123
            ^
SyntaxError: Missing parentheses in call to 'print'. Did you mean print(print 123)?

```

Sure, let me have a look at it and work on fix.

New changeset d57f26c753dce61f72b52b96db3a3253d9f2fc3e by Nick Coghlan (Sanyam Khurana) in branch 'master':
bpo-32028: Fix suggestions for indented print statements (GH-4688)
https://github.com/python/cpython/commit/d57f26c753dce61f72b52b96db3a3253d9f2fc3e

New changeset 4002d5dbf4c058bbf2462f9f5dea057956d1caff by Nick Coghlan (Miss Islington (bot)) in branch '3.6':
[3.6] bpo-32028: Fix suggestions for indented print statements (GH-5249)
https://github.com/python/cpython/commit/4002d5dbf4c058bbf2462f9f5dea057956d1caff

Thanks CuriousLearner for the PR and mdraw for the original issue report!