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h3ik0th/vec_012

Created October 6, 2022 15:21
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vec_012
%%time
# apply, but pre-select columns e and f instead of complete rows: iteration misdemeanor
def myfunc4(b, c):
x = (b + c)**2
y = (b - c)**2
z = (b - c)**2
return x, y,z
dfY = pd.DataFrame()
dfY[["x", "y", "z"]] = dfS.apply(lambda x: myfunc4(x["B"], x["C"]), axis=1, result_type="expand")
display(dfY.tail())
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