本帖最后由 Python 于 2012-4-3 19:59 编辑
删除文件中的重复行: | rFile = open('a.txt', 'r') | | wFile = open('b.txt', 'w') | | allLine = rFile.readlines() | | rFile.close() | | s = set() | | for i in allLine: | | s.add(i) | | for i in s: | | wFile.write(i)COPY |
open('b.txt', 'w').write(''.join(set(open('a.txt').readlines())))COPY 删除文件中的重复行并保持原来的顺序: | rFile = open("a.txt", "r") | | wFile = open("b.txt", "w") | | allLine = rFile.readlines() | | rFile.close() | | h = {} | | for i in allLine: | | if not h.has_key(i): | | h[i]=1 | | wFile.write(i) | | wFile.close()COPY |
| lines, sorted = open('a.txt', 'r').readlines(), lambda a, cmp: a.sort(cmp=cmp) or a | | open('b.txt', 'w').write(''.join([i[0] for i in sorted([(j, lines.index(j)) for j in set(lines)], lambda a,b: a[1]-b[1] )]))COPY |
| h,r,w ={}, file('a.txt'), file('b.txt','w') | | w.write(reduce(lambda x,y:x+y, [i for i in r if h.get(i)==None and h.setdefault(i, True)]))COPY |
| s = [] | | [ s.append(k) for k in open('a.txt') if k not in s ] | | open('b.txt', 'w').write(''.join(s))COPY |
看看各位大湿还有没有其它方法 |