user4789408 :
I am working on a DataFrame and I need to save tuple as value in a specific column.
df['column'] = (423423,41231,5345)
After saving the DataFrame to a .csv if I want to get back the value I can't use the tuple again, because it has been saved as a string.
Is there any way to save a tuple (or also object in general) as a value?
It there any specific function in pandas or other library, which allows to transform the previous tuple (saved as string) as a tuple again?
anky_91 :
csv cannot store python objects , you should use pickle to_pickle and read_pickle instead.
Example:
df = pd.DataFrame({'A':[(1,2,3),(4,5,6),(7,8,9)],'B':list('xyz')})
print(df)
A B
0 (1, 2, 3) x
1 (4, 5, 6) y
2 (7, 8, 9) z
df.to_pickle('test.pkl')
new_df = pd.read_pickle('test.pkl')
print(new_df)
A B
0 (1, 2, 3) x
1 (4, 5, 6) y
2 (7, 8, 9) z
type(new_df.loc[0,'A'])
#tuple
For a csv , when you read a csv , the values are returned as a string to which you can apply ast.literal_eval like df['Col_name'].apply(ast.literal_eval) after importing ast