如何以有組織的方式寫入文件？

Question

我有這樣的代碼：

file = open('scores.txt','w') 
playerscores = [] 
playernames = [['A'],['B'],['C'],['D'],['E'],['F']] 
for y in range(6): 
    for z in range(5): 
      print("Enter score from Judge",z+1,"for couple ",playernames[0+y],"in round 1:") 
      playerscores.append(int(input()))  
MY_LIST = str(playerscores) 
for_every = 4 

從本質上講，我想通過使下面的指數位置上一個新行打印到寫入文件

playerscore[0:6] 
playerscore[7:13] 

等

所以它會看起來像：

1,1,1,1,1,1,1,1,1,1 

而不是[1,1,1,1,1,1]

我需要做，所以當我這樣做

file = open('filename','r') 

，並調用的位置，很容易給出了。

Answer 1

下面是一些代碼，你想要做什麼，但它從我的get_data()功能，而不是從input()獲取數據。這使代碼更易於測試。但是，一旦完成開發程序，您可以輕鬆地用input()替換get_data()電話。

關鍵的想法是，除了將輸入數據的整數版本保存到playerscores之外，我們還將它以原始字符串形式保存在名爲row的單獨列表中。所以，當我們完成讀取給定行的數據時，我們可以輕鬆地將其保存到文件中。這比試圖從playerscores分割數據並將其轉換回字符串更簡單。 scores.txt的

from random import seed, randrange 

# Seed the randomizer 
seed(42) 

# Make some fake data, to simulate user input. 
# Print & return a random number from 1 to 5, in string form 
def get_data(): 
    n = str(randrange(1, 6)) 
    print(n) 
    return n 

playernames = ['A', 'B', 'C', 'D', 'E', 'F'] 

numjudges = 5 

playerscores = [] 
scoresfile = open('scores.txt', 'w') 

for players in playernames: 
    row = [] 
    for z in range(1, numjudges + 1): 
     print("Enter score from Judge", z, "for couple ", players, "in round 1:") 
     data = get_data() 
     playerscores.append(int(data)) 
     row.append(data) 
    scoresfile.write(','.join(row) + '\n') 
    print() 
scoresfile.close() 

典型輸出

Enter score from Judge 1 for couple A in round 1: 
1 
Enter score from Judge 2 for couple A in round 1: 
1 
Enter score from Judge 3 for couple A in round 1: 
3 
Enter score from Judge 4 for couple A in round 1: 
2 
Enter score from Judge 5 for couple A in round 1: 
2 

Enter score from Judge 1 for couple B in round 1: 
2 
Enter score from Judge 2 for couple B in round 1: 
1 
Enter score from Judge 3 for couple B in round 1: 
5 
Enter score from Judge 4 for couple B in round 1: 
1 
Enter score from Judge 5 for couple B in round 1: 
5 

Enter score from Judge 1 for couple C in round 1: 
4 
Enter score from Judge 2 for couple C in round 1: 
1 
Enter score from Judge 3 for couple C in round 1: 
1 
Enter score from Judge 4 for couple C in round 1: 
1 
Enter score from Judge 5 for couple C in round 1: 
2 

Enter score from Judge 1 for couple D in round 1: 
2 
Enter score from Judge 2 for couple D in round 1: 
5 
Enter score from Judge 3 for couple D in round 1: 
5 
Enter score from Judge 4 for couple D in round 1: 
1 
Enter score from Judge 5 for couple D in round 1: 
5 

Enter score from Judge 1 for couple E in round 1: 
2 
Enter score from Judge 2 for couple E in round 1: 
5 
Enter score from Judge 3 for couple E in round 1: 
4 
Enter score from Judge 4 for couple E in round 1: 
2 
Enter score from Judge 5 for couple E in round 1: 
4 

Enter score from Judge 1 for couple F in round 1: 
5 
Enter score from Judge 2 for couple F in round 1: 
3 
Enter score from Judge 3 for couple F in round 1: 
1 
Enter score from Judge 4 for couple F in round 1: 
2 
Enter score from Judge 5 for couple F in round 1: 
4 

內容

1,1,3,2,2 
2,1,5,1,5 
4,1,1,1,2 
2,5,5,1,5 
2,5,4,2,4 
5,3,1,2,4 

Answer 2

如果我理解正確，您正在尋找這樣的事情：

l = [4,3,2,5,6,4,6] 
# split l in chunks -> e.g. [[4,3,2], [5,6,4,6]] 
chunks = [[4,3,2], [5,6,4,6]] 

with open('file.txt', 'w') as f: 
    for i,chunk in enumerate(chunks): 
     if i!=0: 
      f.write('\n'+','.join(str(i) for i in chunk)) 
     else: 
      f.write(','.join(str(i) for i in chunk)) 

# read data back in ls as integers 
ls = [] 
with open('file.txt', 'r') as f: 
    lines = f.read().splitlines() 
    for line in lines: 
     ls += map(int,line.split(',')) 

print ls