sprintf like functionality in Python

Question

I would like to create a string buffer to do lots of processing, format and finally write the buffer in a text file using a C-style sprintf functionality in Pyt

Answer 1

If you want something like the python3 print function but to a string:

def sprint(*args, **kwargs):
    sio = io.StringIO()
    print(*args, **kwargs, file=sio)
    return sio.getvalue()

>>> x = sprint('abc', 10, ['one', 'two'], {'a': 1, 'b': 2}, {1, 2, 3})
>>> x
"abc 10 ['one', 'two'] {'a': 1, 'b': 2} {1, 2, 3}\n"

or without the '\n' at the end:

def sprint(*args, end='', **kwargs):
    sio = io.StringIO()
    print(*args, **kwargs, end=end, file=sio)
    return sio.getvalue()

>>> x = sprint('abc', 10, ['one', 'two'], {'a': 1, 'b': 2}, {1, 2, 3})
>>> x
"abc 10 ['one', 'two'] {'a': 1, 'b': 2} {1, 2, 3}"