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equivalent of case_when in r in pandas

Graceful Gorilla answered on August 16, 2021 Popularity 2/10 Helpfulness 3/10

answer equivalent of case_when in r in pandas

equivalent of case_when in r in pandas

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conditions = [
    (df["age"].lt(10)),
    (df["age"].ge(10) & df["age"].lt(20)),
    (df["age"].ge(20) & df["age"].lt(30)),
    (df["age"].ge(30) & df["age"].lt(50)),
    (df["age"].ge(50)),
]
choices = ["baby", "kid", "young", "mature", "grandpa"]

df["elderly"] = np.select(conditions, choices)

# Results in:
#      name  age  preTestScore  postTestScore  elderly
#  0  Jason   42             4             25   mature
#  1  Molly   52            24             94  grandpa
#  2   Tina   36            31             57   mature
#  3   Jake   24             2             62    young
#  4    Amy   73             3             70  grandpa

Popularity 2/10 Helpfulness 3/10 Language python

Source: stackoverflow.com

Tags: equivalent pandas python r

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