What is an easy way to implement fprintf in python?

What is an easy way to implement fprintf in python?

You say

I want to pass the stream as an argument into a function

but that doesnt give you any extra flexibility. If you have a some_stream variable referring to the stream you want to write to, you can already do

some_stream.write(blah %d % 5)

so you dont gain anything by making the stream a function argument. That said, the print function takes a file argument specifying what stream to write to:

print(blah %d % 5, end=, file=some_stream)

The following will do:

import sys
def fprintf(stream, format_spec, *args):
    stream.write(format_spec % args)

Here is an example of a call:

fprintf(sys.stdout, bagel %d donut %f, 6, 3.1459)

Console output:

bagel 6 donut 3.145900

What is an easy way to implement fprintf in python?

Usually, print (Python) is a replacement for printf (C) and its derivatives (fprintf, println…). Heres how the above snippet would look like in Python:

import sys

print(blah %d % 5, file=sys.stdout)

Or:

print(blah %d % 5)