python 类型转换函数示例详解

number = float("123.45")
print(number)  # 输出: 123.45

number = int("123")
print(number)  # 输出: 123
binary_number = int("101", 2)
print(binary_number)  # 输出: 5

number = bin(5)
print(number)  # 输出: '0b101'

number = hex(255)
print(number)  # 输出: '0xff'

number = oct(8)
print(number)  # 输出: '0o10'

print(bool(0))  # 输出: False
print(bool(1))  # 输出: True
print(bool(""))  # 输出: False
print(bool("Hello"))  # 输出: True

my_tuple = (1, 2, 3)
my_list = list(my_tuple)
print(my_list)  # 输出: [1, 2, 3]

my_list = [1, 2, 3]
my_tuple = tuple(my_list)
print(my_tuple)  # 输出: (1, 2, 3)

my_list = [("a", 1), ("b", 2)]
my_dict = dict(my_list)
print(my_dict)  # 输出: {'a': 1, 'b': 2}

my_list = [1, 2, 2, 3]
my_set = set(my_list)
print(my_set)  # 输出: {1, 2, 3}

c = complex(2, 3)
print(c)  # 输出: (2+3j)

b = bytes("hello", "utf-8")
print(b)  # 输出: b'hello'

ba = bytearray("hello", "utf-8")
ba[0] = ord('H')
print(ba)  # 输出: bytearray(b'Hello')