foo = ‘abc‘
for i in range(len(foo)):
print "%d , %s" % (i, foo[i])
print [x ** 2 for x in range(5) if not x % 2]
try:
f = open(‘e:\XIN_370_logic.tx‘, ‘r‘)
for eachline in f:
print eachline
f.close()
except IOError, e:
print e
def func1(x):
return x + x
x = [i for i in range(4)]
print func1(x)
def func2(debug=True):
if debug:
print ‘true,in debug mode!‘
print ‘done‘
func2(False)
"""
"""
a = int(raw_input(‘input num1:‘))
b = int(raw_input(‘input num2:‘))
c = int(raw_input(‘input num3:‘))
alist = [a, b, c]
minalist = min(alist)
maxalist = max(alist)
medalist = [x for x in alist if x != minalist and x!= maxalist]
medalist = medalist[0]
print minalist, medalist, maxalist
"""
import os
while True:
ar = raw_input("read or write file[r/w],enter . to quit>>")
if ar == ‘w‘:
ls = os.linesep
globals(ls)
while True:
os.chdir(r"e:\\")
filename = raw_input(‘input filename:‘)
if os.path.exists(filename):
print ‘file %s already exists!‘ % filename
else:
break
all = []
print "\nenter lines(‘.‘ by is self to quit).\n"
while True:
entry = raw_input(‘>>>‘)
if entry == ‘.‘:
print ‘quit‘
break
else:
all.append(entry)
f = open(filename, ‘w‘)
print all
for eachline in all:
f.writelines("%s%s" % (eachline, ls))
f.close()
elif ar == ‘r‘:
filename = raw_input(‘input filename:‘)
print
try:
os.chdir(r"e:\\")
f = open(filename, ‘r‘)
except IOError:
print ‘file %s is not exists!‘ % filename
else:
for eachline in f:
print eachline
f.close()
elif ar == ‘.‘:
break
else:
print ‘input error,input again!‘
continue
时间： 2024-08-03 09:22:42