小陈同学的Python学习笔记

Python

beersong.py

可以输出从99到0的一长串儿歌

word = "bottles"
for beer_num in range (99,0,-1):
    print(beer_num,word,"of beer on the wall.")
    print(beer_num,word,"of beer.")
    print("Take one down")
    print("Pass it around")
    if beer_num == 1:
        print("No more bottles of beer on the wall.")
    else:
        new_num = beer_num -1
        if new_num == 1:
            word = "bottle"
        print(new_num, word, "of beer on the wall.")
    print()

vearch.py

定义了两个函数，第二个函数是第一个函数的升级版，可以用来取两个对象的交集。

def search4vowels(phrase:str)->set:
    """Display any vowels found in an asked-for word."""
    vowels = set('aeiou')
    return vowels.intersection(set(phrase))
def search4letters(phrase:str,letters:str)->set:
    """Return a set of the 'letters' found in 'phrase.取交集"""
    return set(letters).intersection(set(phrase))