本次实验的文件是一个60M的文件,共计392660行内容。
程序一:
def one():
start = time.clock()
fo = open(file,'r')
fc = fo.readlines()
num = 0
for l in fc:
tup = l.rstrip('\n').rstrip().split('\t')
num = num+1
fo.close()
end = time.clock()
print end-start
print num
运行结果:0.812143868027s
程序二:
def two():
start = time.clock()
num = 0
with open(file, 'r') as f:
for l in f:
tup = l.rstrip('\n').rstrip().split('\t')
num = num+1
end = time.clock()
times = (end-start)
print times
print num
运行时间:0.74222778078
程序三:
def three():
start = time.clock()
fo = open(file,'r')
l = fo.readline()
num = 0
while l:
tup = l.rstrip('\n').rstrip().split('\t')
l = fo.readline()
num = num+1
end = time.clock()
print end-start
print num
运行时间:1.02316120797
由结果可得出,程序二的速度最快。