python drop row如果仅用于特定字符串

Question

当C列的独立数据值设置为“，”时，我试图删除行。下面的代码将删除所有包含'，'的行，如何删除value ='，'，而不删除其他任何内容？

df2 = pd.DataFrame(dict(A=[1,2,3,4,5,6], C=["Doe, John",",","Driver,A","Matt,", ",",","]))
df2
df2[~df2.C.str.contains(",")] # removes everything

输入：

A   C
1   Doe, John
2   ,
3   Driver,A
4   Matt,
5   ,
6   ,

所需的输出：

A   C
1   Doe, John
3   Driver,A
4   Matt,

Answer 1

鉴于您不需要确切的字符'，可以这样做：

    df2[df2.C != ',']