[英]how does pandas.Series.str.get method work?
I have a pandas.Series named matches like this: 我有一个名为匹配这样pandas.Series:
When I called pandas.Series.str.get
method on it, it returns a new Series with its values all NaN
: 当我在其上调用
pandas.Series.str.get
方法时,它将返回一个新的Series,其值均为NaN
:
I have read the document pandas.Series.str.get , but still can't understand it. 我已经阅读了pandas.Series.str.get文件,但仍然无法理解。
It return second element from iterable, it is same as str[1]
: 它从iterable返回第二个元素,它与
str[1]
相同:
df = pd.DataFrame({"A": [[1,2,3], [0,1,3]], "B":['aswed','yuio']})
print (df)
A B
0 [1, 2, 3] aswed
1 [0, 1, 3] yuio
df['C'] = df['A'].str.get(1)
df['C1'] = df['A'].str[1]
df['D'] = df['B'].str.get(1)
df['D1'] = df['B'].str[1]
print (df)
A B C C1 D D1
0 [1, 2, 3] aswed 2 2 s s
1 [0, 1, 3] yuio 1 1 u u
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