Python 学习笔记 - 第1模块 - 第1次作业

name 通过逗号分隔；

常量的名字全部大写，其实可以修改；

# Author:Csicsi

print("hello world!")

name = "Csicsi"
name2 = name

print("My name is", name, name2)

name = "L"

print(name,name2)

friend_of_Csicsi = "S"

FriendOfCsicsi = "S"

HOME = "M"

print(FriendOfCsicsi, "lives in", HOME, "with", name, "and", name2)

字符编码的区别与介绍

ASCII 码每个字符占一个字节，255,1bytes Unicode 每个字符占两个字节， UTF8 可变长的Unicode，英文字符按ascii码存，中文字符占3个字节 python2 不能直接写中文 python3 可以直接写中文

用户交互程序

input 输入都是字符串，（是py2中的raw_input，py2中的input没有了） %s 字符串 %d 整数 %f 浮点数 info = ''' ---------------- info ---------------- Name : %s; Age : %s; job : %s; Salary : %s; ''' % (name, age, job, salary) print(info) info2 = ''' ---------------- info2 ---------------- Name : {_name} Age : {_age} job : {_job} Salary : {_salary} '''.format(_name=name, _age=age, _job=job, _salary=salary) info3 = ''' ----------------- info3 ----------------- Name : {0} Age : {1} job : {2} Salary : {3} '''.format(name, age, job, salary)

%s 代表 string, %d 表示只能输入数字，帮助检测数据类型

# Author:Csicsi

username = input("username:")
password = input("password:")
print(username,password)

name = input("Name:")
age = int(input("Age:"))
job = input("Job:")
salary = input("Salary:")


info = '''

------- info of ''' + name + ''' ---------
Age:''' + str(age) + '''
Job:''' + job + '''
Salary:''' + salary + '''
'''

print(info)

info2 = '''

------- info2 of %s ---------
Age:%d
Job:%s
Salary:%s
''' %(name,age,job,salary)

print(info2)

info3 = '''

------- info3 of {_name} ---------
Age:{_age}
Job:{_job}
Salary:{_salary}
'''.format(_name=name,
           _age=age,
           _job=job,
           _salary=salary)
print(info3)

info4 = '''

------- info4 of {0} ---------
Age:{1}
Job:{2}
Salary:{3}
'''.format(name,age,job,salary)
print(info4)

if else流程判断

“=”表示赋值，“==”表示等于 getpass在Pycharm里无法实现，在CMD里可以执行【python的强制缩进】 - python 用强制缩进来代表结束语。 - INDENTATION ERROR代表缩进错误 - 所有的代码，如果自己就是顶级，就必须顶格写。

# Author: csicsi

import getpass

_username = 'csicsi'
_password = '1234'

username = input("username=")
#password = getpass.getpass("password")
password = input("password=")

if _username == username and _password == password:
    print("Welcome user {name} login...".format(name=username))
else:
    print("Invalid username or password!")

# Author: csicsi

age_of_csicsi = 23

count = 0
while count < 3:
    guess_age = int(input("guess age:"))
    if guess_age == age_of_csicsi:
        print("You are a genius! csicsi is {age}.".format(age=guess_age))
        break
    elif guess_age > age_of_csicsi:
        print("try younger...")
    else:
        print ("try older!")
    count += 1
    if count == 3:
        continue_confirmation = input("Do you want to keep trying?")
        if continue_confirmation != 'n':
            count = 0

#else:
#    print("You've tried too many times... Bye...")

for 循环及作业要求

continue 跳出本次循环进入下次循环 break 结束整个循环

# Author: csicsi

for i in range(10):
    print('-----------',i)
    for j in range(10):
        print(j)
        if j > 5:
            break




# Author: csicsi

age_of_csicsi = 23

for i in range(3):
    guess_age = int(input("guess age of csicsi:"))
    if guess_age == age_of_csicsi:
        print("You are a genius! csicsi is {age}.".format(age=guess_age))
        break
    elif guess_age > age_of_suzy:
        print("try younger...")
    else:
        print("try older!")
else:
    print("You've tried too many times... Bye...")

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Python 学习笔记 - 第1模块 - 第1次作业