python 輸入字符串比較

#!/usr/bin/python
import sys
print 'please input two string:'
strs = []
for i in sys.argv:
    print 'now start -->'
    print i
    if i == "test_string.py":
        continue
    strs.append(i)

print strs

str1=strs[0]
str2=strs[1]
if len(str1)>len(str2):
    pass
else:
    tmp = str1
    str1 = str2
    str2 = tmp
if str1.find(str2) >=0:
    print 'good'
    sys.exit(0)
else:
    for m in xrange(0,len(str2)-1):
        # print m
        for n in xrange(m+1,len(str2)):
            # print n
            check_str = str2[m:n]
            # print check_str
            if str1.find(check_str) >=0:
                print 'almost good'
                break
            else:
                # print '%s is not contained in %s' %(check_str,str1)
                if m == len(str2)-2 and n == len(str2)-1:
                    print 'bad'