#15989: Python 3 preparation: Change print statement to print() function
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Reporter: wluebbe | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.2
Component: distribution | Resolution:
Keywords: python3 | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by wluebbe):
In Sage there are currently only 4 py modules with an {{{from __future__
import print_function}}}.
From the [[https://docs.python.org/2/library/functions.html#print|Python
documentation]]:
Note: This function <the print() function> is not normally available as
a built-in since the name print is
recognized as the print statement. To disable the statement and use the
print() function,
use this future statement at the top of your module:
"from !__future!__ import print_function".
//New in version 2.6.//
There are about 50 py modules that contain uses of the print statement
that look like a function call (i.e. having parenthesis). In some cases
2to3 will wrap an additional pair of parenthesis around it. But as the
following snippet shows this should be neither in Py2.7 nor in Py3.3 a
problem:
{{{
Python 2.7.5+ (default, Feb 27 2014, 19:37:08)
>>> print "text"
text
>>> print"text"
text
>>> print("text")
text
>>> print(("text"))
text
>>> from __future__ import print_function
>>> print"text"
File "<stdin>", line 1
print"text"
^
SyntaxError: invalid syntax
>>> print "text"
File "<stdin>", line 1
print "text"
^
SyntaxError: invalid syntax
>>> print("text")
text
>>> print(("text"))
text
>>>
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/15989#comment:1>
Sage <http://www.sagemath.org>
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