python - 我在 Python v 3.3.2 中遇到集合和元组问题

Question

我在集合中使用 namedtuple。我收到这个错误

NameError: name collections is not defined.  

我使用的是 Python v 3.3.2。任何帮助将不胜感激

[例如]我在这条线上遇到错误

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

Answer 1

您是否导入了collections 模块？模块名称是 collections，而不是 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")