Python基础01

>>> print("Hello,Python")
Hello,Python

#print("Hello,Python!")
print("Hello,Python!")
'''
print(hello)
print(python)
'''

a
_b
a3
_a123

>>> a=1
>>> a
1
>>> print(type(a))
<class 'int'>
>>> a=1.3
>>> a
1.3
>>> print(type(a))
<class 'float'>
>>> 

>>> a=1
>>> a+=1
>>> a
2

>>> L
[]
>>> L=["My","your"]
>>> L
['My', 'your']
>>> L[0]
'My'
>>> L[1]
'your'>>> L[1]="Me"
>>> L
['My', 'Me']

>>> t=("My","You")
>>> t
('My', 'You')
>>> t[0]
'My'
>>> t[1]
'You'
>>> 

>>> a="dasdsada"
>>> b="dasdadadddaa"
>>> sa=set(a)
>>> sa
{'a', 'd', 's'}
>>> sb=set(b)
>>> sb
{'a', 'd', 's'}
>>> sa&sb
{'a', 'd', 's'}
>>> 

>>> d={'name':'duxiao','age':'25'}
>>> d
{'name': 'duxiao', 'age': '25'}

1 >>> d['name']
2 'duxiao'
3 >>> d['age']
4 '25'
5 >>> 

>>> a=2
>>> b=3
>>> a+b
5
>>> a*b
6
>>> a-b
-1
>>> a/b
0.6666666666666666
>>> a%b
2
>>> b&a
2
>>> 7+8
15

>>> 10%3
1

>>> 10//3
3

>>> 9+5*2-1
18
>>> (9+5)*2-1
27
>>> 

a=10
b=9
if(a>9):
    print(a)
    if(b==9):
        print(b)
elif(a<10):
    print("abc")