我在Python v 3.3.2中遇到集合和元组的问题

Question

I am using the namedtuple with the collections. i am getting this error

NameError: name collections is not defined.  

I am using Python v 3.3.2. Any help would be very appreciated

[for Example] I am getting error on this line

Sale = collection.namedtuple("Sale","productid custerid date price")

Answer 1

Did you import collections module? The module name is collections , not collection .

>>> Sale = collection.namedtuple("Sale","productid custerid date price")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'collection' is not defined
>>>
>>> import collection
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named collection
>>>
>>> import collections
>>> Sale = collections.namedtuple("Sale","productid custerid date price")