练习题3

# 求1-100偶数和
tolal = 0
for i in range(0, 101,2):
    print(i)
    tolal += i
print(tolal)

# 求1-100奇数和
tolal = 0
for i in range(1, 101,2):
    print(i)
    tolal += i
print(tolal)

---
info = {
    'egon': {'pwd': '123', 'hobbies': ['play', 'music', 'read']},
    'alex': {'pwd': '1234', 'hobbies': ['music', 'read']},
    'wupeiqi': {'pwd': '135', 'hobbies': ['read', ]},
}

info['alex']['hobbies'].append('play')
print(info)

字典取值使用key，hobbies取出后是一个列表，可以使用append方法添加值