python - Count no. of specific values in a dataframe pandas -

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this question has answer here:

i newbie in data analysis stuff. trying analyse dataset using python. enter image description here

  1. i want count no. of 1s in survived column
  2. no. of male , female in sex column

passengerid survived pclass sex
0 1 0 3 male 1 2 1 1 female 2 3 1 3 male 3 4 1 1 female 4 5 0 3 male

i tried groupby() giving error.

in[88] titanic_data.groupby('survived') out[88] <pandas.core.groupby.dataframegroupby object @ 0x000000000bffe588>

please suggest solution

use value_counts:

df['survived'].value_counts() df['sex'].value_counts()

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