A date doesn't match the format
Question: Why doesn't a date match the format?

    
    
    >>> import datetime
    >>> dt1 = "9/1/2014 0:00"
    >>> datetime.datetime.strptime(dt1, "%m/%d/%y %H:%M")
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
      File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/_strptime.py", line 325, in _strptime
        (data_string, format))
    ValueError: time data '9/1/2014 0:00' does not match format '%m/%d/%y %H:%M'
    

And this one either:

    
    
    >>> datetime.datetime.strptime(dt1, "%d/%m/%y %H:%M")
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
      File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/_strptime.py", line 325, in _strptime
        (data_string, format))
    ValueError: time data '9/1/2014 0:00' does not match format '%d/%m/%y %H:%M'
    


Answer: let's open <http://strftime.org/> and check:

    
    
    %m  Month as a zero-padded decimal number.
    

so it's need to be `09`, not `9`

    
    
    %d  Day of the month as a zero-padded decimal number.
    

so it's need to be `01`, not `1`

    
    
    %y  Year without century as a zero-padded decimal number.
    

so it's need to be `14`, not `2014`

    
    
    %H  Hour (24-hour clock) as a zero-padded decimal number.
    

so it's need to be `00`, not `0`.

