python - Does python3 typecast entered input() value? -

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i writing raingauge precipitation calculator based in radius of raingauge. when run script, have error message:

type de raingauge radius [cm]: 5.0 traceback (most recent call last):   file "pluviometro.py", line 27, in <module>     area_bocal = (pi * (raio_bocal * raio_bocal)) # cm.cm typeerror: can't multiply sequence non-int of type 'str'

i using raio_bocal = input("type de raingauge radius [cm]:") data input. when using python2 typecasting automatic.

how can have float entered value using python3?

as mentioned in docs

the function reads line input, converts string (stripping trailing newline), , returns that

so need type cast float explicitly 

raio_bocal = float(input("type de raingauge radius [cm]:"))

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