I've have the following 2 columns in my df:
vict_age vict_sex
0 22.0 M
1 39.0 F
2 33.0 M
3 17.0 Unknown Gender
4 51.0 M
5 52.0 F
7 17.0 Unknown Gender
8 63.0 M
9 50.0 M
10 14.0 F
11 33.0 M
12 36.0 F
13 50.0 F
14 34.0 M
15 29.0 F
I would like to get a count where vict_sex = M and vict_age < 40 for e.g.
using the query function allowed me to return this:
df3.query("vict_sex=='M'")['vict_age']
vict_age
0 22.0
2 33.0
4 51.0
8 63.0
9 50.0
11 33.0
14 34.0
how can I get a count of vict_age < 40?
Name: vict_age, dtype: float64