Mengembalikan angka floating-point yang dibuat dari angka atau string.
class float(x=0.0)
If the argument is a string, it should contain a decimal number, optionally preceded by a sign, and optionally embedded in whitespace. The optional si
digitdigitdigitpartdigitpartdigitpartdigitpartexponentsignfloatnumberinfinitynan
>>> float('+1.23')
1.23
>>> float(' -12345\n')
-12345.0
>>> float('1e-003')
0.001
>>> float('+1E6')
1000000.0
>>> float('-Infinity')
-inf