TypeError: 'module' object is not callable python class method

Question

I have the following class methods:

def queryCollection(self, query_string={}, distinct_output = "_id"):
    output_array = []
    for property in self.coll.find(query_string).distinct(distinct_output):
        output_array.append(property)
    return set(output_array)

def smallDateQuery(self):
    x = self.queryCollection( { "created_at": {"$gte" : datetime(2015, 3, 1), "$lt": datetime(2015, 3, 30)}} )
    return x

When I call the first one, it works:

x = user.queryCollection({ "created_at": {"$gte" : datetime(2015, 3, 1), "$lt": datetime(2015, 3, 30)}})
print len(x)

When I call the second, it does not:

y = user.smallDateQuery()
print len(y)
quit()

I get the following error:

 x = self.queryCollection( { "created_at": {"$gte" : datetime(2015, 3, 1), "$lt": datetime(2015, 3, 30)}} )
TypeError: 'module' object is not callable

What is the issue?

Have you tried splitting it into more separate steps so see what the uncallable object is? How did you import datetime? — jonrsharpe
– jonrsharpe, Commented May 7, 2015 at 15:02
nice catch!!! on the class module, I just had import Datetime but on the main module I had from datetime import datetime. Changed the class module and it worked. Thanks! — DBWeinstein
– DBWeinstein, Commented May 7, 2015 at 15:05
Incidentally, since you're putting the contents of output_array into a set, why not do it directly? Eg, output_set = set() for property in thingy: output_set.add(property). Also, beware of the dangers of default mutable arguments, although it doesn't matter here since you don't modify query_string in queryCollection(). — PM 2Ring
– PM 2Ring, Commented May 7, 2015 at 15:15

stellasia · Accepted Answer · 2015-05-07 15:04:49Z

1

You probably have

import datetime

in which case you should use

datetime.datetime(2015, 3, 1)

The error arises because datetime is a module, the function to call is datetime.datetime.

answered May 7, 2015 at 15:04

stellasia

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2 Comments

Reut Sharabani Over a year ago

from datetime import datetime

chepner Over a year ago

Technically, datetime.datetime is a class, not a function.

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