Is there a in built method from python csv module to enumerate all possible value for a specific column? -

i have csv file has many columns. requirement find possible value present specific column.

is there built in function in python helps me these values.

you can pandas.

example file many_cols.csv:

col1,col2,col3 1,10,100 1,20,100 2,10,100 3,30,100 

find unique values per column:

>>> import pandas pd >>> df = pd.read_csv('many_cols.csv') >>> df.col1.drop_duplicates().tolist() [1, 2, 3] >>> df['col2'].drop_duplicates().tolist() [10, 20, 30] >>> df['col3'].drop_duplicates().tolist() [100] 

for columns:

import pandas pd  df = pd.read_csv('many_cols.csv')  col in df.columns:     print(col, df[col].drop_duplicates().tolist()) 

output:

col1 [1, 2, 3] col2 [10, 20, 30] col3 [100]