[已解决]打印文件的前n行

CarterZhang

题目要求：当用户输入文件名和行数（N）后，将该文件的前N行内容打印到屏幕上。


def print_lines(file,n):
    f1 = open(file,'r')
    for i in range(int(n)):
        print(f1.readline,end = ' ')
        
    f1.close

file = input('which file do you want to print:')
n = input('how many rows do you want to print:')
print_lines(file,n)

以上程序，我的运行结果如下，请大佬问题出在哪？该如何改进？

<built-in method readline of _io.TextIOWrapper object at 0x000001A162DA81E0> <built-in method readline of _io.TextIOWrapper object at 0x000001A162DA81E0> <built-in method readline of _io.TextIOWrapper object at 0x000001A162DA81E0>

最佳答案

月排行榜 / 总排行榜

逃兵

2020-11-22 11:05:08

f1.readline 忘记了加括号
close 忘了加括号

1. def print_lines(file,n):
   
2.     f1 = open(file,'r')
   
3.     for i in range(int(n)):
   
4.         print(f1.readline(),end = '')
   
5.         
   
6.     f1.close()
   
7. 
   
8. file = input('which file do you want to print:')
   
9. n = input('how many rows do you want to print:')
   
10. print_lines(file,n)
    

复制代码

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逃兵

f1.readline 忘记了加括号
close 忘了加括号

1. def print_lines(file,n):
   
2.     f1 = open(file,'r')
   
3.     for i in range(int(n)):
   
4.         print(f1.readline(),end = '')
   
5.         
   
6.     f1.close()
   
7. 
   
8. file = input('which file do you want to print:')
   
9. n = input('how many rows do you want to print:')
   
10. print_lines(file,n)
    

复制代码

CarterZhang

逃兵 发表于 2020-11-22 11:05
f1.readline 忘记了加括号
close 忘了加括号

谢谢大佬，低级错误，麻烦了！