assert is_number("3.45")
assert is_number(1 + 5j)
assert is_number(5)
assert is_number(0.0)
assert not is_number("3.43.55")
assert not is_number("hie")
assert not is_number("[^1]")
assert not is_number(None)
helper.numbers
Numbers
is_number
is_number (x:Union[float,int,complex,str])
*Return True
if the input x
represents a number.
This function is different from Python’s built-in is_numeric
function, which returns True
when all characters of a string are digits.*