重命名值

Question

我有這樣一個數據幀：

col1 col 2 
abc sure 
def yes 
ghi no 
jkl no 
mno sure 
pqr yes 
stu sure 

我的目的是重命名「確定」和「是」進入「確認」，使數據幀的樣子：

col1 col 2 
abc confirm 
def confirm 
ghi no 
jkl no 
mno confirm 
pqr confirm 
stu confirm 

如何做到這一點:)？

Answer 1

你可以：

df = df.replace(['yes','sure'],'confirm') 

Answer 2

另一種方法是使用Series.map()映射'yes'和'sure'到'confirm'和'no'到'no'。實施例 -

mapping = {'sure':'confirm','yes':'confirm','no':'no'} 
df['col2'] = df['col2'].map(mapping) 

演示 -

In [67]: df 
Out[67]: 
    col1 col2 
0 abc sure 
1 def yes 
2 ghi no 
3 jkl no 
4 mno sure 
5 pqr yes 
6 stu sure 

In [68]: mapping = {'sure':'confirm','yes':'confirm','no':'no'} 

In [69]: df['col2'] = df['col2'].map(mapping) 

In [70]: df 
Out[70]: 
    col1  col2 
0 abc confirm 
1 def confirm 
2 ghi  no 
3 jkl  no 
4 mno confirm 
5 pqr confirm 
6 stu confirm