变量赋值
a = 1
b = 2
c = 3
print a, b, c # 1 2 3
a = b = c = 1
print a, b, c # 1 1 1
a, b, c = 1, 2, 3
print a, b, c # 1 2 3
data = ("monkey", 12, ["Python", "java"])
name, age, language = data
print name, age, language # monkey 12 ['Python', 'java']
交换两个变量的值
a, b = 1, 2
print a, b # 1 2
a, b = b, a
print a, b # 2 1
a, b, c = 1, 2, 3
print a, b, c # 1 2 3
a, b, c = c, b, a
print a, b, c # 3 2 1
python中有哪些类型的布尔值是False？
print bool(0)
print bool(-0)
print bool(0.0)
print bool(0.0+0.0j)
print bool(None)
print bool(False)
print bool("")
print bool([])
print bool(())
print bool({})
https://www.runoob.com/python/python-variable-types.html
