Question

我需要这个函数输出到.txt文件，我在它下面的内容只返回最后一行整数。

def random_grid(file):
    grid = []
    num_rows = raw_input("How many raws would you like in your grid? ")
    num_columns = raw_input("How many columns would you like in your grid? ")
    min_range = raw_input("What is the minimum number you would like in your grid? ")
    max_range = raw_input("what is the maximum number you would like in your grid? ")
    for row in range(int(num_rows)):
        grid.append([])
        for column in range(int(num_columns)):
            grid[row].append(random.randint((int(min_range)),(int(max_range))))         
    for row in grid:
        x = (' '.join([str(x) for x in row])) 
        print x

        with open(r"test.txt", 'w') as text_file:
            text_file.write(x)

如果用户选择3乘3网格，则可以打印低数量的1和9的高数字。

1 2 3    
4 5 6   
7 8 9

我只是

7 8 9

在我输出的.txt文件中

Answer 1

open，w的第二个选项将覆盖文件的内容。请改为使用a进行追加，但也要在每行后添加换行符\n。

def random_grid(file):
    grid = []
    num_rows = raw_input("How many raws would you like in your grid? ")
    num_columns = raw_input("How many columns would you like in your grid? ")
    min_range = raw_input("What is the minimum number you would like in your grid? ")
    max_range = raw_input("what is the maximum number you would like in your grid? ")
    for row in range(int(num_rows)):
        grid.append([])
        for column in range(int(num_columns)):
            grid[row].append(random.randint((int(min_range)),(int(max_range))))         
    for row in grid:
        x = (' '.join([str(x) for x in row])) 
        print x

        with open(r"test.txt", 'a') as text_file:
            text_file.write(x)
            text_file.write("\n")

另一种更有效的方法是将文件编写代码移到循环之外，如下所示：

def random_grid(file):
    grid = []
    num_rows = raw_input("How many raws would you like in your grid? ")
    num_columns = raw_input("How many columns would you like in your grid? ")
    min_range = raw_input("What is the minimum number you would like in your grid? ")
    max_range = raw_input("what is the maximum number you would like in your grid? ")
    for row in range(int(num_rows)):
        grid.append([])
        for column in range(int(num_columns)):
            grid[row].append(random.randint((int(min_range)),(int(max_range))))    
    x = ""
    for row in grid:
        x += (' '.join([str(x) for x in row])) + "\n" 
        print x

    with open(r"test.txt", 'w') as text_file:
        text_file.write(x)

Answer 2

您需要附加到文件而不是覆盖它

更改

with open(r"test.txt", 'w') as text_file:

到

with open(r"test.txt", 'a') as text_file:

用于追加模式

或将with open(r"test.txt", 'w') as text_file:移到for row in grid循环

之上

import random

def random_grid(file):
    grid = []

    num_rows = int(raw_input("How many rows would you like in your grid? "))
    num_columns = int(raw_input("How many columns would you like in your grid? "))
    min_range = int(raw_input("What is the minimum number you would like in your grid? "))
    max_range = int(raw_input("What is the maximum number you would like in your grid? "))

    for _ in range(num_rows):
        grid.append([random.randint(min_range,max_range) for _ in range(num_columns)])

    grid_str = '\n'.join(' '.join(map(str, row)) for row in grid)

    with open(r"test.txt", 'w') as text_file:
        text_file.write(grid_str)

Python列表到txt

2 个答案: