1 >>> help(open) 2 Help on built-in function open in module __builtin__: 3 4 open(...) 5 open(name[, mode[, buffering]]) -> file object 6 7 Open a file using the file() type, returns a file object. This is the 8 preferred way to open a file. See file.__doc__ for further information. 9 10 >>> f=open('E:\tmp.txt') 11 >>> f 12 <open file 'E:\tmp.txt', mode 'r' at 0x0000000002F84540> 13 >>> f.read() 14 'nihao wozhidao xc4xb2xb0xd8xd0xf1 ' 15 >>> list(f) 16 [] 17 >>> f.read(5) 18 '' 19 >>> f.read() 20 '' 21 >>> f=open("E:\tmp.txt") 22 >>> f.read 23 <built-in method read of file object at 0x0000000002F845D0> 24 >>> f.read() 25 'nihao wozhidao xc4xb2xb0xd8xd0xf1 ' 26 >>> f.read() 27 '' 28 >>> f=open("E:\tmp.txt") 29 >>> f 30 <open file 'E:\tmp.txt', mode 'r' at 0x0000000002F84540> 31 >>> f.read(5) 32 'nihao' 33 >>> f.seek() 34 35 Traceback (most recent call last): 36 File "<pyshell#14>", line 1, in <module> 37 f.seek() 38 TypeError: seek() takes at least 1 argument (0 given) 39 >>> f.tell() 40 5L 41 >>> lines=list(f) 42 >>> for eachLine in lines: 43 print eachLine 44 45 46 47 48 wozhidao 49 50 牟柏旭 51 52 >>> f 53 <open file 'E:\tmp.txt', mode 'r' at 0x0000000002F84540> 54 >>> f.read() 55 '' 56 >>> f.seek(0,0) 57 >>> f.readline() 58 'nihao ' 59 >>> f.seek(0,0) 60 >>> fw=open('E:\tmp.txt','w') 61 >>> fw.write('let's go') 62 63 SyntaxError: invalid syntax 64 >>> fr=open('E:\tmp1.txt','w') 65 >>> fr.write('nihao') 66 >>> fr.close()
