Python datetime timestamp issue

Question

I was trying to create a dictionary with time stamp as the key. the code is :

    >>> stamp = datetime.datetime(2012, 4, 12, 12, 26, int('13'))
    >>> new_dict = {}
    >>> new_dict[stamp] = 'one'
    >>> print new_dict
    {datetime.datetime(2012, 4, 12, 12, 26, 13): 'one'}
    >>> print stamp
    2012-04-12 12:26:13

Why does it not take the key as '2012-04-12 12:26:13' and instead taking the expression 'datetime.datetime()' as the key?

Lev Levitsky · Accepted Answer · 2012-04-12 09:55:18Z

2

Because stamp is a datetime.datetime object. When you print it, a string representing this object is printed. If you want a str key, try

new_dict[str(stamp)] = 'one'

answered Apr 12, 2012 at 9:55

Lev Levitsky

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Luper Rouch · Accepted Answer · 2012-04-12 10:00:39Z

2

'2012-04-12 12:26:13' is a string, and stamp in your example is a datetime.datetime object.

You can use datetime objects directly as keys in a dictionnary, as stated in the documentation (two identical datetimes will have the same hash).

answered Apr 12, 2012 at 10:00

Luper Rouch

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1 Comment

Ankit Kumar Over a year ago

can i use it like: new_dict[datetime.datetime()] ?

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