What's the difference between these datatypes: float and integer?

an integer contains a whole number $($like $1$ or $100)$ and a float contains a

fractional or decimal number $($like $0\mathrm{.}50$ or $3\mathrm{.}33)$

a float contains a whole number $($like $1$ or $100)$ and an integer contains a

fractional or decimal number $($like $0\mathrm{.}50$ or $3\mathrm{.}33)$

Integers are used in Python, but not floats

Floats are used in Python, but not integers