# a = 10
# print(type(a))
#
# a = "hello"
# print(type(a))
#
# a = False
# print(type(a))

"""
这是文档注释
期望打印出 a = 10 这样的效果
"""

# 错误的打印方式
# a = 10
# print("a = " + a)

# 正确的打印方式
# print(f"a = {a}")
# print(f"a = {a + 10}")

"""
a = input("输入一个数字: ")
print(type(a))
print(f"输入的数字为: {a}")
"""

# a = input("输入一个数字: ")
# print(type(a))
# a = int(a)
# print(type(a))
# print(f"输入的数字为: {a}")
#
# print(4 ** 2)
# print(4 ** 0.5)
#
# print(1 == 2 / 2)

# print(2 / 2)
#
# print(0.1 + 0.2 == 0.3)

a = 10
b = 20

print(a, b)

a, b = b, a
print(a, b)

print("aaa" + "hello")
print(1 + 1.0)
print(1 + False)
print(f"a = {a}")

a: int = 100
print(type(a))