date format without time - Printable Version +- Python Forum (https://python-forum.io) +-- Forum: Python Coding (https://python-forum.io/forum-7.html) +--- Forum: Data Science (https://python-forum.io/forum-44.html) +--- Thread: date format without time (/thread-7536.html) |
date format without time - issac_n - Jan-15-2018 i wanted to truncate the time from this 03/01/2018 00:00 to 2018-01-03 and i tried list comprehension but working. any idea? filename = filedialog.askopenfilename( initialdir="C:/", title="Select CSV file", filetypes=(("CSV file", "*.csv"), ("all files", "*.*"))) ip_table = pd.read_csv(filename) ip_table['DateB']=(datetime.strptime(ip_table['Date'], '%Y-%m-%d %H:%M').strftime('%Y-%m-%d') for ip_table['DateB'] in ip_table['Date']) print(ip_table)error msg as below; https://ibb.co/gGXsXR RE: date format without time - buran - Jan-15-2018 it's not an error - when you use () brackets in comprehension expression (line#3) it produce a generator. use [] in order to get a list RE: date format without time - issac_n - Jan-15-2018 (Jan-15-2018, 10:56 AM)buran Wrote: it's not an error - when you use () brackets in comprehension expression (line#3) it produce a generator. use [] in order to get a listan error occurs >> i don't understand the argument error.
RE: date format without time - metulburr - Jan-15-2018 ip_table['Date'] must be of type Series and not a str https://docs.python.org/3/library/datetime.html#datetime.datetime.strptime RE: date format without time - issac_n - Jan-15-2018 (Jan-15-2018, 02:19 PM)metulburr Wrote:means i need to change the input data type before change format? RE: date format without time - snippsat - Jan-15-2018 >>> from datetime import datetime >>> d = ['11-01-2018'] >>> datetime.strptime(d, '%d-%m-%Y') Traceback (most recent call last): File "<string>", line 301, in runcode File "<interactive input>", line 1, in <module> TypeError: strptime() argument 1 must be str, not list # Fix >>> datetime.strptime(d[0], '%d-%m-%Y') datetime.datetime(2018, 1, 11, 0, 0)You see that this generate the same error except it's a list, i fix it be taking the string out list using index. For Pandas Series object there is a pandas.Series.to_string RE: date format without time - issac_n - Jan-19-2018 (Jan-15-2018, 03:59 PM)snippsat Wrote:>>> from datetime import datetime >>> d = ['11-01-2018'] >>> datetime.strptime(d, '%d-%m-%Y') Traceback (most recent call last): File "<string>", line 301, in runcode File "<interactive input>", line 1, in <module> TypeError: strptime() argument 1 must be str, not list # Fix >>> datetime.strptime(d[0], '%d-%m-%Y') datetime.datetime(2018, 1, 11, 0, 0)You see that this generate the same error except it's a list, i fix it be taking the string out list using index. For Pandas Series object there is a pandas.Series.to_string thanks for info, i changed the input format before loading to it. :) |