Usually when we process data, some data types are not what we want, what should we do?
1. Data type conversion: the type (data) to be converted
· To convert num01 to an integer: int(num01)
· To convert num01 to a floating point number: float(num01)
· To convert num01 to a string: str(num01)
· To convert nun01 to boolean type: bool(num01)
E.g:
print(int("12345")+1)
print(float("12.345")+1.187)
print(str(123)+"456")
print ( bool ( 1 )) #As long as it is not zero converted, it is True, and 0 is False
print ( int ( 123.456 )) # Convert to the value after the decimal point is removed
print ( int ( "Sandy" )) #Cannot be converted, does not belong to the basic requirements of numbers
Note: During data type conversion, not all conversions can be successful, and exception handling is required.
2. Convert numeric values to characters
E.g:
print(ord("X"))
print(chr(88))
Three, system conversion
E.g:
print(hex(200))
print(oct(200))
print(bin(200))
Demo:
