I downloaded and installed Python 3.1.2 on Windows 7 x64. But it seems that it's not working as expected, for example:
Please help me figure out, what's wrong here?
+8
A:
Try this:
>>> print "Today's stock price: %f" % 50.4625
File "<stdin>", line 1
print "Today's stock price: %f" % 50.4625
^
SyntaxError: invalid syntax
>>> print("Today's stock price: %f" % 50.4625)
Today's stock price: 50.462500
Python 3.X changed how print works, and now requires parentheses around the arguments.
Zonda333
2010-07-27 04:41:22
You saved my life. I have to wait 10 minutes to accept this answer :)
Vimvq1987
2010-07-27 04:43:36
I'm getting an error when trying to edit my post, but you can check here: http://docs.python.org/dev/whatsnew/3.1.html for other changes.
Zonda333
2010-07-27 04:45:00
new format style: print("Today's stock price: {0}".format(50.4625))
histrio
2010-07-27 04:46:39
+4
A:
Python 3.X is not backward-compatible with Python 2.X. Make sure you are reading a 3.X tutorial, or remove 3.X and install 2.X.
Here's some reading about why there are differences and to decide which to use: http://wiki.python.org/moin/Python2orPython3.
Mark Tolonen
2010-07-27 04:58:17
A:
As stated above python 3.x now requires all statements such as those to be function calls, Python 3.x is supposed to bring back the functional aspect of C to python although code that works in 3.x will most likely work in 2.x but not necessarily the other way around.
Jesus Ramos
2010-07-27 05:03:22