[Tutor] functions
david
din22@cox.net
Sun Dec 1 08:57:03 2002
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why does this work:
>>> d=3D{}
>>> d
{}
>>> def myfun():
d[0]=3D'hello'
=20
>>> myfun()
>>> d
{0: 'hello'}
but this doesnt?
>>> d=3D'hello'
>>> d
'hello'
>>> def myfun():
d=3D'goodbye'
=20
>>> myfun()
>>> d
'hello'
>>>
=20
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3D"text/html; charset=3Diso-8859-1" =
http-equiv=3DContent-Type>
<META content=3D"MSHTML 5.00.2614.3500" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>why does this work:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>>>> d=3D{}<BR>>>>=20
d<BR>{}<BR>>>> def =
myfun():<BR> d[0]=3D'hello'</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2> <BR>>>> =
myfun()<BR>>>>=20
d<BR>{0: 'hello'}</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>but this doesnt?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>>>> =
d=3D'hello'<BR>>>>=20
d<BR>'hello'<BR>>>> def =
myfun():<BR> d=3D'goodbye'</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2> <BR>>>> =
myfun()<BR>>>>=20
d<BR>'hello'<BR>>>></FONT></DIV>
<DIV><FONT face=3DArial size=3D2> </FONT></DIV></BODY></HTML>
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