Chapter2 リスト

2.12

# 列名をリストに変換する
list1 = [i for i in df.columns]
print(list1)

# インデックス名をリストに変換する
list2 = [i for i in df.index] 
print(list2)

2.27

import pandas as pd
data = {
    "国語" : [90,50,None,40],
    "数学" : [80,None,None,50]
}
idx =  ["A太","B介","C子","D郎"]
dfA = pd.DataFrame(data, index=idx)
dfA

2.33

import pandas as pd
data = [
    [10,30,40],
    [20,30,40],
    [20,30,40],
    [30,30,50],
    [20,30,40]
        ]
dfA = pd.DataFrame(data)
dfA

2.36

import pandas as pd
data = {
    "A" : ["100","300"],
    "B" : ["500","1,500"]
}
dfA = pd.DataFrame(data)
dfA