KeyError

KeyError is a result of referring to a key in a dictionary that does not exist. In the following example code, we have a series of timestamps we will try to convert. One of those timestamps, 1673165179242, is too large and will generate ValueError. When this happens, the key, which in this case, would be named timestamp2, does not exist and will cause KeyError when requested from the dictionary:

>>> import datetime
>>> timestamps = [1363424592, 1440356096, 1673165179242]
>>> def convertTime(time_list):
...     data_dict = {}
...     for i, value in enumerate(time_list):
...         try:
...             data_dict['timestamp' + str(i)] = datetime.datetime.fromtimestamp(value)
...         except ValueError:
...             pass
...     return data_dict
...     
>>> converted_time = convertTime(timestamps)
>>> print converted_time['timestamp0']
2013-03-16 05:03:12
>>> print converted_time['timestamp2&apos...