'Index' object has no attribute 'tz_localize'

Question

I\'m trying to convert all instances of \'GMT\' time in a time/date column (\'Created_At\') in a csv file so that it is all formatted in \'EST\'. Please see below:

Answer 1

Hmm. Like the other tz_localize current problem, this works fine for me. Does this work for you? I have simplified some of the calls a bit from your example:

df2 =  pd.DataFrame(randn(3, 3), columns=['A', 'B', 'C'])
# randn(3,3) returns nine random numbers in a 3x3 array.
# the columns argument to DataFrame names the 3 columns. 
# no datetimes here! (look at df2 to check)

df2['A'] = pd.to_datetime(df2['A'])
# convert the random numbers to datetimes -- look at df2 again
# if A had values to_datetime couldn't handle, we'd clean up A first

df2.set_index('A',drop=False, inplace=True)
# and use that column as an index for the whole df2;

df2.index  = df2.index.tz_localize('GMT').tz_convert('US/Eastern')
# make it timezone-conscious in GMT and convert that to Eastern

df2.index.tzinfo

<DstTzInfo 'US/Eastern' LMT-1 day, 19:04:00 STD>

Answer 2

Replace

cambridge.set_index('Created_At', drop=False, inplace=True)

with

cambridge.set_index(pd.DatetimeIndex(cambridge['Created_At']), drop=False, inplace=True)