Description
In this question, you are required to extract the last dates data of each month from a time series.
Recommended Packages
datetime (strptime)
pandas (to_datetime)
Input
ukpound_exchange.csv
Output
output.csv
Sample Input
datevalue
10-01-20161
20-01-20162
30-01-20163
Sample Output
datevalue
30-01-20163
Important Notes
It is a good idea to convert the date string into a datetime object.
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