Python Panda (Page: 4)
Adding/Removing data to the DataFrame
it is possible to add column with identical value, or add a column with individual values
Add column with identical value
Add a column length and fill it with uniform value
restored_df_number_dict['length'] = 1
print(restored_df_number_dict)
# european roman length
#0 zero 0 1
#1 one I 1
#2 two II 1
#3 three III 1
#4 four IV 1
#5 five V 1Add column with individual values
To add individual values, you need to supply then as a list, and you need to make sure that the size of this list is matching the size of the DataFrame
restored_df_number_dict['length'] = [1, 1, 2, 3, 2, 1]
print(restored_df_number_dict)
# european roman length
#0 zero 0 1
#1 one I 1
#2 two II 2
#3 three III 3
#4 four IV 2
#5 five V 1Delete column from panda DataFrame
It is possible to remove full column with destroying all te data in this column with command del
del restored_df_number_dict['length']
print(restored_df_number_dict)
# european roman
#0 zero 0
#1 one I
#2 two II
#3 three III
#4 four IV
#5 five VAdding row with selected index
It is possible to add row with any index, even negative. If this index already exists - it will be overwritten
restored_df_number_dict.loc[10] = ['six', 'VI']
# if you will use existing index - you will rewrite the data
# index can be negative as well
# european roman
#0 zero 0
#1 one I
#2 two II
#3 three III
#4 four IV
#5 five V
#10 six VIDeleting row with selected index
Removing row with selected index is a bit more complicated
restored_df_number_dict = restored_df_number_dict.drop(restored_df_number_dict.index[0])
# european roman
#1 one I
#2 two II
#3 three III
#4 four IV
#5 five V
#10 six VIGo to Page: 1; 2; 3; 4; 5; 6; 7; 8;
Published: 2021-11-05 09:11:16
Updated: 2021-12-17 02:48:39