python3控制结构

选择

n = 10
i = 2
if n == i:
    print("equal")
elif n < i:
    print("lower")
else:
    print("higher")

遍历

while i < n:
    i += 1
    print(i)
else:
    print("done")


for i in range(0, 5):
    print(i)
else:
    pass

lst = ["aa", "bb"]
for name in lst:
    print(name)

tp = ("aa", "bb")
for name in tp:
    print(name)

dct = {"name": "lily", "age": 19}
for key, value in dct.items():
    print(key, value)
for key in dct.keys():
    print(key)
for value in dct.values():
    print(value)
for key in dct:
    print(key, dct[key])

data = [{"lily": 5}, {"rose": 13}]
birth_data = [[value for key, value in row.items()] for row in data]
print(birth_data)