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- #!/usr/bin/env python
- # -*- coding:utf8 -*-
- # Import python libs
- from __future__ import print_function
-
- for x in ["spam", "eggs", "ham"]:
- print(x, end='\n')
-
- sum=0
- for x in [1,2,3,4]:
- sum +=x
- print(sum)
- prod=1
- for item in [1,2,3,4]:
- prod*=item
- print(prod)
- #for循环应用于字符串，元组
- S='asdfafafdag[4qqqfqf'
- T=("a","b","c")
- for x in S:
- print(x,end=',')
-
- for y in T:
- print(y,end='_')
-
- Y=((1,2),(3,4),(5,6))
- for (a,b) in Y:
- print (a,b)
-
- D={'a':1,'b':2,'c':3}
- print(list(D.items()))
- L=list(D.items())
- print(L)
- for (key,value) in D.items():
- print(key, '=>', value)
- ((a,b),c) = ((1,2),3)
- print(a,b,c)
- for ((a,b),c) in [((1,2),3),((4,5),6)]:
- print(a,b,c)
- all = (1,2,3,4)
- #a,*b,c=(1,2,3,4)
- a,b,c=all[0],all[1:3],all[3]
- print(a,b,c)
-
-
- items=['aaa',111,(4,5),2.01]
- tests=[(4,5),3.14]
- for key in tests:
- for item in items:
- if key == item:
- print(key,'was found.')
- break
- else:
- print(key,'was not found.')
- for key in tests:
- if key in items:
- print(key,'was found.')
- else:
- print(key,'was not found.')
- seq1='adfklo2'
- seq2='aqwerl2'
- res=[]
- for x in seq1:
- if x in seq2:
- res.append(x)
- print(res)
- print(range(5))
- print(range(2,100,2))
- print(range(10,-5,-1))
- print(range(-5,5,2))
- for i in range(-10,50,2):
- print(i,':line')
- X='fghjkl;'
- for i in range(len(X)):
- print(X[i],end=',')
- for i in X:
- print(i,end='.')
- print('================')
- Y='asdfghjklwertyuiodfghjkertyu'
- for i in range(0,len(Y),3):
- print(Y[i],';')
- print(Y[::4])
- Z=[1,2,3,4,5]
- for i in range(len(Z)):
- Z[i]+=1
- print(Z)
- A=[10,20,30,40,50]
- B=[1,2,3,4]
- print(zip(A,B))
- for (i,j) in zip(A,B):
- print(i,'+',j,'=',i+j)
-
- C=['ADF','WER','HKL']
- D=[1,2,3]
- E={}
- for k,v in zip(C,D):
- E[k]=v
- print(E)
- E=dict(zip(C,D))
- print(E)
- #产生偏移和元素：enumerate
- S='asdfghjkl'
- for offset,item in enumerate(S):
- print(item,'appears at offset',offset)
- '''
- a appears at offset 0
- s appears at offset 1
- d appears at offset 2
- f appears at offset 3
- g appears at offset 4
- h appears at offset 5
- j appears at offset 6
- k appears at offset 7
- l appears at offset 8
- '''
- #依次取出
- E=enumerate(S)
- print(next(E))
- print(next(E))
- print(next(E))
- print(next(E))
- print(next(E))
- print(next(E))
- print(next(E))
- print(next(E))
- print(next(E))
- '''
- (0, 'a')
- (1, 's')
- (2, 'd')
- (3, 'f')
- (4, 'g')
- (5, 'h')
- (6, 'j')
- (7, 'k')
- (8, 'l')
- '''
- #生成与偏移的相对应的个数的元素
- print([a * b for a,b in enumerate(S)])
- '''
- ['', 's', 'dd', 'fff', 'gggg', 'hhhhh', 'jjjjjj', 'kkkkkkk', 'llllllll']
- '''
