Python 3.6 introduces F-strings as a new way of doing string formatting.
Instead of writing this:
def say(greeting='hello', target='world'):
print('%s, %s!' % (greeting.title(), target))
... you can now write this:
def say(greeting='hello', target='world'):
print(f'{greeting.title()}, {target}!')
This project provides automatic translation of old %-style formatting
to the new string interpolation method using F-strings.
If you use Vim, then simply source the fstrings.vim file.
Select a set of lines (with V) and press = to update the selection.
If you use another editor, you can invoke the fstrings.py script as follows:
python3.6 fstrings.py 40 50 < input.py > tmp.pyThis parses all of input.py and outputs just lines 40-50 to tmp.py.