擅长:python、mysql、java
<pre><code> df.apply(lambda x: x.astype(str).str.lower())
custid age income gen wp mp lip
CustAtt
0 101 45 $45k male no yes no
1 106 40 $39k female yes yes yes
2 111 42 $46k male no no no
3 116 43 $36k male yes yes yes
4 121 38 $59k female no yes yes
5 126 55 $28k female no no no
6 131 35 $35k male no yes yes
7 136 27 $26k male yes no no
8 141 43 $36k male no yes no
9 146 41 $38k female yes yes no
</code></pre>