Python: 语法(持续更新)

python2.7中,for循环语句的强大可以通过下列案例看出,你可能很少见到这样的使用方式:
 '''
Algorithm for Python

'''
import random
import datetime

ranArray = []
ranArray = [x for x in range(100000)]

tStart = datetime.datetime.now()
tEnd = datetime.datetime.now()

def swapsort():
random.shuffle(ranArray)
arr = ranArray
length = len(arr)
start()
for i in range(length):
for j in range(i+1,length):
if arr[i] > arr[j]:
tem = arr[i]
arr[i] = arr[j]
arr[j] = tem
print "Swap sort end."
end()

def mutrixmult():
a = [[1,2],[2,3]]
b = [[7,22],[22,33]]
c = [[0 for x in range(a)] for x in range(b)]
for i in range(len(a)-1):
for j in range(len(a[0]-1)):
for m in range(b[0]-1):
c[i][j] = a[i][j] * b[i][m] +a[i][j+1] * b[i][m+1]

def start():
tStart = datetime.datetime.now()
def end():
tEnd = datetime.datetime.now()
print "Cost",tEnd - tStart

if __name__ == "__main__":
#swapsort()
mutrixmult()