How can I get print function output ?

How can I get print function output ? - Printable Version

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How can I get print function output ? - harun2525 - May-08-2017

i want to save print function output to my var without printing console. (sprintf function in C)

var = specific_print("hello", "my dear", "how are", "you", sep = " ", end = " ?", return_string = True, print_console = False)
print(var)

# output => hello my dear how are you ?

RE: How can I get print function output ? - volcano63 - May-08-2017

You can't - print function returns None

In [5]: print(print(1))
1
None

Here is what print function can do

In [7]: print?
Docstring:
print(value, ..., sep=' ', end='\n', file=sys.stdout, flush=False)

Prints the values to a stream, or to sys.stdout by default.
Optional keyword arguments:
file:  a file-like object (stream); defaults to the current sys.stdout.
sep:   string inserted between values, default a space.
end:   string appended after the last value, default a newline.
flush: whether to forcibly flush the stream.
Type:      builtin_function_or_method

There is also no need to. If you want formatted output, you may use formatting options; if you want to concatenate strings with spaces -

' '.join([<list of strings>])

is your friend

RE: How can I get print function output ? - harun2525 - May-08-2017

@volcano63,

Thanks.

i solved my problem with the following code

def myprint(*args, sep=" ",  end="\n"):
    return sep.join(args) + end

RE: How can I get print function output ? - nilamo - May-08-2017

You could also redirect the output to a stringio object...

>>> import io
>>> text = io.StringIO()
>>> print("just some stuff", file=text)
>>> print("more things", file=text)
>>> text.seek(0)
0
>>> text.readlines()
['just some stuff\n', 'more things\n']
>>> text.getvalue()
'just some stuff\nmore things\n'

RE: How can I get print function output ? - wavic - May-09-2017

+1 for io.StringIO

Or you can rewrite the print function

print_bak = print

def print(*args, **kwargs):
    return args

text = print([1,2,3,4])

print = print_bak

RE: How can I get print function output ? - volcano63 - May-09-2017

(May-08-2017, 09:49 PM)nilamo Wrote: You could also redirect the output to a stringio object...

(May-09-2017, 09:39 AM)wavic Wrote: Or you can rewrite the print function

With all due respect, those are more of hacks...
Though for concatenating many small strings into a bigger one io.StringIO is a good option (especially if performance is an issue ..., especially for OP Tongue

)