"In the output, the classes str and int appear, but why is float not included in cls?"

[sushmashahi]

[mxschmdt]

Hi sushmashahi,
there is only one print() call in the shown code; therefore, there should only be this single output.

You can print each variable and its type like so:

length_a = 10
print(length_a)
print(type(length_a))
length_b = 1.1233
print(length_b)
print(type(length_b))

Could you maybe share more information about your intention?