# 需要导入模块: import os [as 别名]# 或者: from os importSEEK_CUR[as 别名]defseek(self, pos, whence=os.SEEK_SET):"""Seek to a position in the file. """ifself.closed:raiseValueError("I/O operation on closed file")ifwhence == os.SEEK_SET: self.position = min(max(pos,0), se...
Description Summary: unistd.h should mean that the defines SEEK_SET, SEEK_CUR and SEEK_END are available for use with lseek(). However, if you turn on modules support in the Objective-C compiler, then they are not available. Steps to Rep...
Process finished with exit code 1 照理说,按照seek()方法的格式file.seek(offset,whence),后面的1代表从当前位置开始算起进行偏移,那又为什么报错呢? 这是因为官方文档这样说: In text files (those opened without abin the mode string), only seeks relative to the beginning of the file are allowed (...
首先关于生成器的那些事: 1.通常的for…in…循环中,in后面是一个数组,这个数组就是一个可迭代对象,类似的还有链表,字符串,文件。它的缺陷是所有数据都在内存中,如果有海量数据的话将会非常耗内存。 它可以是mylist = [1, 2, 3],也可以是mylist = [x*x for x in range(3)]。 *它的缺陷是所有数据...