Python第一阶段01

1.变量：

name = "sisi"

print(name)

age =

print(age)

2.常量：

PIE = 3.1415926

3.注释：

# password = "aaaa"

'''password = sisi'''

"""aaaaaaaaaa
aaaaaaa"""

4. 输出多行字符：

a = '''haha

efefejfijeofjeof

djendejndenfef

'''

print(a)

b = """aaaaaaaaaa

aaaaaaa"""

print(b)

5.用户交互程序：

name = input("name:")

age = input("age:")

salary = input("salary:")

print(name, age, salary)

print(type(age))

a = '''name = %s, age = %s, salary = %s''' % (name, age, salary)

b = '''name = {name}, age = {age}, salary = {salary}'''

c = '''name = {_name}, age = {_age}, salary = {_salary}'''.format(__name = name, __age = age, __salary = salary)

d = '''name = {0}, age = {1}, salary = {3}'''

print(a)

6.密码密文输入：

import getpass

username = input("name: ")

password = getpass.getpass("password: ")

print(username, password)

7. if...else流程判断：

import getpass

name = "sisi"

passwd = ""

username = input("name: ")

# password = getpass.getpass("password: ")

password = input("password: ")

if username == name and password == passwd:

    print("Loggin in...")

    print("Welcome user {name} login...".format(name = username))

    print(username, password) 

else: print("error")

8.While循环：

count =

while True:

    print("count: ", count)

    count = count +

    if count == :

        break

9.循环优化for循环：

for i in range():

    print("loop", i )    # ~

for i in range(, , ):   # range(开始值，结束值，步长)

    print(i)

巴特西

Python第一阶段01

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