二十五岁时我们都一样愚蠢、多愁善感,喜欢故弄玄虚,可如果不那样的话,五十岁时也就不会如此明智。
标题:Python3 os 模块 Ftruncate 方法
Python3 os 模块 Ftruncate 方法
#!/usr/bin/python3 import os, sys # Open a file fd = os.open( "foo.txt", os.O_RDWR|os.O_CREAT ) # Write one string os.write(fd, "This is test - This is test") # Now you can use ftruncate() method. os.ftruncate(fd, 10) # Now read this file from the beginning. os.lseek(fd, 0, 0) str = os.read(fd, 100) print ("Read String is : ", str) # Close opened file os.close( fd ) print ("Closed the file successfully!!")