writelines()方法读取字符串的序列到文件。该序列可以是一个迭代对象生产的字符串，通常是字符串列表。这个函数没有返回值。
语法
下面是 writelines()方法的语法 -
fileObject.writelines( sequence )
参数
-
sequence -- 这是字符串的序列。
返回值
此方法不返回任何值。
示例
下面的例子显示 writelines()方法的使用。
Assuming that 'foo.txt' file contains following text: This is 1st line This is 2nd line This is 3rd line This is 4th line This is 5th line
#!/usr/bin/python3
# Open a file in read/write mode
fo = open("abc.txt", "r+")
print ("Name of the file: ", fo.name)
seq = ["This is 6th line\n", "This is 7th line"]
# Write sequence of lines at the end of the file.
fo.seek(0, 2)
line = fo.writelines( seq )
# Now read complete file from beginning.
fo.seek(0,0)
for index in range(7):
line = next(fo)
print ("Line No %d - %s" % (index, line))
# Close opened file
fo.close()
当我们运行上面的程序，会产生以下结果 -
Name of the file: foo.txt Line No 0 - This is 1st line Line No 1 - This is 2nd line Line No 2 - This is 3rd line Line No 3 - This is 4th line Line No 4 - This is 5th line Line No 5 - This is 6th line Line No 6 - This is 7th line
