Python：df['a']str.contains() 可以有多个条件吗？

Question

I have 4 types of value in my df column A example shown below

123
123/123/123/123/123
123,,123,,123
1234-1234-1234

i want index of those value which do not have any type of sepertor in it

I tried like this but failed to get results

mask = df["A"].str.contains(',','/' na=False)

Any help would be appreciated

Answer 1

If possible invert logic - get all rows if only numbers without any separator use ^\d+$ - ^ means start of string, \d+ means one or more digits and $ means end of string - together only numbers values:

mask = df["A"].str.contains('^\d+$', na=False)

print (mask)
0     True
1    False
2    False
3    False
Name: A, dtype: bool