Implemented a dynamic way to create weekday names dictionary and also Changed weekday_name function to day_name as it was giving some error : "'DatetimeProperties' object has no attribute 'weekday_name' :

[MohitMehndiratta]

df['Weekday'] = df['Date'].dt.weekday_name
Change it to:
df['Weekday'] = df['Date'].dt.day_name()

[sheikhmasud16]

Thanks

[shivam1750]

df['Weekday'] = df['Date'].dt.weekday_name
Change it to:
df['Weekday'] = df['Date'].dt.weekday

it directly give the number formate data