Python file方法write()将字符串str写入文件。没有返回值。由于缓冲,在调用flush()或close()方法之前,字符串可能不会实际显示在文件中。
fileObject.write( str )
str - 这是要写入文件的字符串。
以下示例显示write()方法的用法。
链接:https://www.learnfk.comhttps://www.learnfk.com/python/file-write.html
来源:LearnFk无涯教程网
This is 1st line This is 2nd line This is 3rd line This is 4th line This is 5th line
#!/usr/bin/python # Open a file in write mode fo=open("foo.txt", "rw+") print "Name of the file: ", fo.name # Assuming file has following 5 lines # This is 1st line # This is 2nd line # This is 3rd line # This is 4th line # This is 5th line str="This is 6th line" # Write a line at the end of the file. fo.seek(0, 2) line=fo.write( str ) # Now read complete file from beginning. fo.seek(0,0) for index in range(6): line=fo.next() print "Line No %d - %s" % (index, line) # Close opend file fo.close()
当无涯教程运行上面的程序时,它产生以下输出-
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
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