Python的write()
方法將字串str
寫入檔案描述符fd
。 返回實際寫入的位元組數。
語法
以下是write()
方法的語法 -
os.write(fd, str)
引數
返回值
範例
以下範例顯示了write()
方法的用法。
# !/usr/bin/python3
import os, sys
# Open a file
fd = os.open( "f1.txt", os.O_RDWR|os.O_CREAT )
# Write one string
line = "this is test"
# string needs to be converted byte object
b = str.encode(line)
ret = os.write(fd, b)
# ret consists of number of bytes written to f1.txt
print ("the number of bytes written: ", ret)
# Close opened file
os.close( fd)
print ("Closed the file successfully!!")
編譯並執行上面的程式,輸出結果如下 -
the number of bytes written: 12
Closed the file successfully!!