[issue4534] problem with str.join - should work with list input, error says requires 'str' object

[arsalan]

arsalan added the comment:

it is really a good help

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nosy: +bkyasi

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[issue4534] problem with str.join - should work with list input, error says requires 'str' object

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc [EMAIL PROTECTED] added the comment:

str is not your string, it's not a string; str is a class name, a
standard type.

str.join is a unbound method. You can call it directly if you pass an
actual string object in front of the other arguments.
But the normal way to call methods is to use them on objects:

someString = 
someList = ['f', 'r', 'e', 'd', ' ', 'i', 's']
someString.join(someList)

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[issue4534] problem with str.join - should work with list input, error says requires 'str' object

[jeff deifik]

Changes by jeff deifik [EMAIL PROTECTED]:


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title: problem with str.join - problem with str.join - should work with list 
input, error says requires 'str' object

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[issue4534] problem with str.join - should work with list input, error says requires 'str' object

[David W. Lambert]

David W. Lambert [EMAIL PROTECTED] added the comment:

Try this---

def List_to_String(lis,separator=''):
return separator.join(lis)

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[issue4534] problem with str.join - should work with list input, error says requires 'str' object

[jeff deifik]

jeff deifik [EMAIL PROTECTED] added the comment:

Thanks.
I want to learn what is wrong with the code I have though.
My main goal is to understand python 3.0 better, rather than
fixing a specific problem.

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[issue4534] problem with str.join - should work with list input, error says requires 'str' object

[David W. Lambert]

David W. Lambert [EMAIL PROTECTED] added the comment:

I did this to find out what are str.join's arguments---

$ python3 -c 'help(str.join)'

Help on method_descriptor:

join(...)
S.join(sequence) - str

Return a string which is the concatenation of the strings in the
sequence.  The separator between elements is S.

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[issue4534] problem with str.join - should work with list input, error says requires 'str' object

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc [EMAIL PROTECTED] added the comment:

 str.join(lis, '')

I doubt this really worked with 2.6.
Wasn't it something like:

 import string
 string.join(lis, '')

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nosy: +amaury.forgeotdarc
resolution:  - invalid
status: open - closed

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