我想从 pandas 数据帧的每一列的每个单元格中提取一些字符。 MWE如下:
import pandas as pd
# initialize list of lists
data = [['tom', 'jerry'], ['nick', 'fury'], ['juli', 'anna']]
# Create the pandas DataFrame
df = pd.DataFrame(data, columns=['Name', 'Name2'])
df2 = df['Name'].str[:1] # this works for a single column
df3 = df.map(str[:1]) # this does not work for the entire dataframe
`
我能够从单个列(df2)中删除字符串,但无法对整个数据帧执行此操作(df3 尝试)。我收到的错误是
TypeError: type 'str' is not subscriptable