This is the 'aired' column in the csv file: as
Link to the csv file: https://drive.google.com/file/d/1w7kIJ5O6XIStiimowC5TLsOCUEJxuy6x/view?usp=sharing
I want to extract the date and the month (in words) from the date following the 'from' word and store it in a separate column in another csv file. The 'from' is an obstruction since had it been just the date it would have been easily extracted as a timestamp format.
import pandas as pd
file = pd.read_csv('file.csv')
result = []
for cell in file['aired']:
date = cell[8:22]
date_ts = pd.to_datetime(date, format='%Y-%m-%d')
result.append((date_ts.month_name(), date_ts))
df = pd.DataFrame(result, columns=['month', 'date'])
df.to_csv('result_file.csv')
You are starting from a string and want to break out the data within it. The single quotes is a clue that this is a dict structure in string form. The Python standard libraries include the ast
(Abstract Syntax Trees) module whose literal_eval
method can read a string into a dict, gleaned from this SO answer: Convert a String representation of a Dictionary to a dictionary?
You want to apply
that to your column to get the dict, at which point you expand it into separate columns using .apply(pd.Series)
, based on this SO answer: Splitting dictionary/list inside a Pandas Column into Separate Columns
Try the following
import pandas as pd
import ast
df = pd.read_csv('AnimeList.csv')
# turn the pd.Series of strings into a pd.Series of dicts
aired_dict = df['aired'].apply(ast.literal_eval)
# turn the pd.Series of dicts into a pd.Series of pd.Series objects
aired_df = aired_dict.apply(pd.Series)
# pandas automatically translates that into a pd.DataFrame
# concatenate the remainder of the dataframe with the new data
df_aired = pd.concat([df.drop(['aired'], axis=1), aired_df], axis=1)
# convert the date strings to datetime values
df_aired['aired_from'] = pd.to_datetime(df_aired['from'])
df_aired['aired_to'] = pd.to_datetime(df_aired['to'])
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