Create A DataFrame by iterating and inserting rows



In [3]:

    
import pandas as pd
from random import randint



In [4]:

    
columns = ['a', 'b', 'c']



In [5]:

    
df = pd.DataFrame(columns=columns)



In [6]:

    
for i in range(5):
    df.loc[i] = [randint(-1,1) for n in range(3)]



In [7]:

    
df



In [ ]:

	a	b	c
0	0.0	-1.0	-1.0
1	1.0	1.0	0.0
2	1.0	-1.0	1.0
3	-1.0	1.0	1.0
4	-1.0	-1.0	1.0