int¶my_int = 6
print(f"value: {my_int}, type: {type(my_int)}")
value: 6, type: <class 'int'>
float¶my_float = float(my_int)
print(f"value: {my_float}, type: {type(my_float)}")
value: 6.0, type: <class 'float'>
Note that division of ints produces float:
print(1 / 1)
print(6 / 5)
1.0 1.2
Be aware of the binary floating-point pitfalls (see Decimal for workaround):
val = 0.1 + 0.1 + 0.1
print(val == 0.3)
print(val)
False 0.30000000000000004
//, modulus %, power **¶7 // 5
1
7 % 5
2
2**3
8
from decimal import Decimal
from_float = Decimal(0.1)
from_str = Decimal("0.1")
print(f"from float: {from_float}\nfrom string: {from_str}")
from float: 0.1000000000000000055511151231257827021181583404541015625 from string: 0.1
my_decimal = Decimal("0.1")
sum_of_decimals = my_decimal + my_decimal + my_decimal
print(sum_of_decimals == Decimal("0.3"))
True
Mathematical operator precedence applies. Use brackets if you want to change the execution order:
print(1 + 2**2 * 3 / 6) # 1 + 4 * 3 / 6 == 1 + 12 / 6 == 1 + 2
print((1 + 2**2) * 3 / 6)
3.0 2.5