# 打印0-10去掉5
count = -
while count < :
count +=
if count == :
continue
print(count)
# 打印0-10的偶数
count =
while count<:
print(count)
count+=
# while死循环
import time #引用内置函数用import，这里引用的时间函数
count =
while True:
print(count)
count+=
time.sleep()
# break与continue
# break:终止循环
# continue：跳过本次循环
count =
while count<:
print(count)
count+=
if count==:
break
# for循环
for i in range(,):
for j in range(,i+):
print('%s*%s=%s'% (j,i,j*i),end=' ')
print('')
# 逻辑运算
a =
b =
c =
d =
if a== or b== and c== or d==:
print('qwer')
# 逻辑运算中同时有多个‘and’和‘or’，先看算and,再算or
#if逻辑运算练习：
age = int(input("请输入你家狗狗的年龄: "))
print("")
if age < :
print("你是在逗我吧!")
elif age == :
print("相当于 14 岁的人。")
elif age == :
print("相当于 22 岁的人。")
elif age > :
human = + (age -)*
print("对应人类年龄: ", human)
## 退出提示
input("点击 enter 键退出")
# 计算1-100的总和
a =
b =
while a<:
b+=a
a+=
print(b)
# 1.做一个名片管理系统
# 2.名片内容有name，age，phone
# 3.可以实现增删改查功能
#made in zhou
sys=[]
name = {}
while True:
print(sys)
n = int(input('请输入1增,2删,3改,4查,5退出：'))
if n==:
a = input('name:')
b = input('age:')
c = input('phone:')
name.setdefault('name',a)
name.setdefault('age',b)
name.setdefault('phone',c)
sys.append({'name': a, 'age': b, 'phone': c})
elif n==:
d = input('输入需要删除的名字：')
for e in sys:
if e['name']==d:
sys.remove(e)
print("已删除！")
else:
print('此用户不存在')
# elif n==:
# f = input('')
elif n==:
f = input('输入用户')
for g in sys:
if f in g['name']:
print(g)
else:
continue
# break
print('用户不存在')
elif n==:
break
#名片管理系统答案
info = []
while True:
print('*****欢迎来到名片管理系统*****')
print(' 1.查看名片')
print(' 2.添加名片')
print(' 3.删除名片')
print(' 4.修改名片')
print(' 5.退出系统')
print('*' * )
choose = input('请选择:').strip()
#查看
if choose == '':
if info:
info_lenth = len(info)
for j in range(info_lenth):
print('%s.姓名:%s 年纪:%s 电话:%s' % (j, info[j]['name'], info[j]['age'], info[j]['phone']))
else:
print('空')
#增加
elif choose == '':
name = input('name:').strip()
age = input('age:').strip()
phone = input('phone:').strip()
if name and age and phone:
info.append({
'name': name,
'age': age,
'phone': phone
})
else:
print('请输入相应的信息')
#删除
elif choose == '':
info_lenth = len(info)
for j in range(info_lenth):
print('%s.姓名:%s 年纪:%s 电话:%s' % (j, info[j]['name'], info[j]['age'], info[j]['phone']))
res = input('请选择要删除的名片:')
info.remove(info[int(res)])
print('删除成功！')
#修改
elif choose == '':
info_lenth = len(info)
for j in range(info_lenth):
print('%s.姓名:%s 年纪:%s 电话:%s' % (j, info[j]['name'], info[j]['age'], info[j]['phone']))
res2 = input('请选择要修改的内容:')
edit_name = input('姓名(回车不修改):').strip()
edit_age = input('年纪(回车不修改):').strip()
edit_phone = input('电话(回车不修改):').strip()
if edit_name:
info[int(res2)]['name'] = edit_name
if edit_age:
info[int(res2)]['age'] = edit_age
if edit_phone:
info[int(res2)]['phone'] = edit_phone
print('修改成功！')
#退出
elif choose == '':
print('感谢使用！')
break
else:
print('请正确选择')