[Pandas] Pandas Cheat Sheet (Creating DataFrames)

Creating DataFrames¶

In [1]:

import pandas as pd

In [2]:

df = pd.DataFrame(
      {"a" : [4,5,6],
       "b" : [7,8,9],
       "c" : [10,11,12]}, index = [1,2,3])

In [3]:

df

Out[3]:

	a	b	c
1	4	7	10
2	5	8	11
3	6	9	12

In [6]:

df = pd.DataFrame(
        [[4, 7, 10],
        [5, 8, 11],
        [6, 9, 12]],
        index=[1, 2, 3],
        columns=['a', 'b', 'c'])

In [7]:

df

Out[7]:

	a	b	c
1	4	7	10
2	5	8	11
3	6	9	12

In [8]:

df = pd.DataFrame(
    {"a" : [4 ,5, 6],
    "b" : [7, 8, 9],
    "c" : [10, 11, 12]},
    index = pd.MultiIndex.from_tuples(
    [('d',1),('d',2),('e',2)],
    names=['n','v']))

• pd.MultiIndex.from_tuples: 멀티 인덱스를 생성해줍니다.

In [9]:

df

Out[9]:

		a	b	c
n	v
d	1	4	7	10
	2	5	8	11
e	2	6	9	12