我正在处理几乎只有字符串的大型 csv 文件。我想做一些统计测试，例如定义集群，但为此我需要将我的字符串转换为 int。（我对 python、pandas、scikitlearn 也是完全陌生的）。
所以这里是我的代码：
#replace str as int
df.WORK_TYPE[df.WORK_TYPE == 'aaa']=1
df.WORK_TYPE[df.WORK_TYPE == 'bbb']=2
df.WORK_TYPE[df.WORK_TYPE == 'ccc']=3
df.WORK_TYPE[df.WORK_TYPE == 'ddd']=4
print(df)
这里是我的错误信息：
C:\Users\ishemf64\AppData\Local\Continuum\anaconda3\lib\site-packages\ipykernel_launcher.py:1: SettingWithCopyWarning:
A value is trying to be set on a copy of a slice from a DataFrame
See the caveats in the documentation: http://pandas.pydata.org/pandas-docs/stable/indexing.html#indexing-view-versus-copy
"""Entry point for launching an IPython kernel.
C:\Users\ishemf64\AppData\Local\Continuum\anaconda3\lib\site-packages\ipykernel_launcher.py:2: SettingWithCopyWarning:
A value is trying to be set on a copy of a slice from a DataFrame
See the caveats in the documentation: http://pandas.pydata.org/pandas-docs/stable/indexing.html#indexing-view-versus-copy
C:\Users\ishemf64\AppData\Local\Continuum\anaconda3\lib\site-packages\ipykernel_launcher.py:3: SettingWithCopyWarning:
A value is trying to be set on a copy of a slice from a DataFrame
See the caveats in the documentation: http://pandas.pydata.org/pandas-docs/stable/indexing.html#indexing-view-versus-copy
This is separate from the ipykernel package so we can avoid doing imports until
C:\Users\ishemf64\AppData\Local\Continuum\anaconda3\lib\site-packages\ipykernel_launcher.py:4: SettingWithCopyWarning:
A value is trying to be set on a copy of a slice from a DataFrame
See the caveats in the documentation: http://pandas.pydata.org/pandas-docs/stable/indexing.html#indexing-view-versus-copy
after removing the cwd from sys.path.
我不明白为什么我会出现此错误，如果我想进行分析，您能否告诉我是否有其他方法和/或强制转换文本。