Redirecting standard output to a file (once) works in Python 2.7 but not in Python 3.0?

Asked Jan 26 '15 at 15:13

Active Jan 26 '15 at 15:13

Viewed 32 times

Why does the following statement

print >> textfile, 'this is redirected output'

(where textfile = open('text.dat', 'a'))

work for redirecting standard output to a file in Python 2.7, but doesn't work in Python 3.0 ?

The error message I get is:

Traceback (most recent call last):
  File "C:\Users\HP\workspace\py\pypkg\redirection.py", line 19, in <module>
    print >> (textfile, 'this is redirected output')
TypeError: unsupported operand type(s) for >>: 'builtin_function_or_method' and 'tuple'

edited Jan 26 '15 at 15:13

Kevin

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asked Jan 26 '15 at 15:13

Shuzheng

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1

https://docs.python.org/3/whatsnew/3.0.html#print-is-a-function – Ashwini Chaudhary Jan 26 '15 at 15:14
3

Because `print()` in Python 3 is a function. Use `print('this is redirected output', file=textfile)` instead. – Martijn Pieters Jan 26 '15 at 15:14
More details in the PEP: https://www.python.org/dev/peps/pep-3105/ – NDevox Jan 26 '15 at 15:16

Redirecting standard output to a file (once) works in Python 2.7 but not in Python 3.0?

0 Answers0