1.文件的操作:
操作 |
解释 |
output=open(r'c:123.txt','w') |
创建输出文件,w写入 |
input=open('data','r') |
创建输出文件,r读取 |
input=open('data') |
创建输出文件,r默认 |
s=input.read() |
整个文件读取单一字符串 |
s=input.read(N) |
读取之后的n个字节到字符串 |
s=input.readline() |
读取下一行到一个字符串 |
alist=input.readlines() |
读取整个文件到字符串列表 |
output.write(s) |
写入字节字符串到文件 |
output.writelines(list) |
把列表内所有字符串写入文件 |
output.close() |
手动关闭 |
output.flust() |
清空缓存 |
anyFile.seek(N) |
查询 |
for line in open('data'):use line |
逐行读取 |
open('f.txt',encodeing='latin-1') |
设置unicode |
open('f.bin','rb') |
2.基本操作实例
>>> myfile=open('123.txt','w') >>> myfile.write <built-in method write of _io.TextIOWrapper object at 0x012D8D30> >>> myfile.write('hello world ') 13 >>> myfile.write('hello world 2 ') 15 >>> myfile.close () >>> myfile=open('123.txt') >>> myfile.readline <built-in method readline of _io.TextIOWrapper object at 0x0170B5B0> >>> myfile.readline () 'hello world ' >>> myfile.readline () 'hello world 2 ' >>> myfile.readline () '' >>>
上面是读取、写入文件
3.只有字符串才能够写入文件
>>> myfile=open('123.txt','w') >>> l=(1,2,3) >>> myfile.write(l) Traceback (most recent call last): File "<pyshell#30>", line 1, in <module> myfile.write(l) TypeError: must be str, not tuple >>>
>>> t=[1,2,3] >>> myfile.write(t) Traceback (most recent call last): File "<pyshell#35>", line 1, in <module> myfile.write(t) TypeError: must be str, not list >>>
就说到这里,谢谢大家
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