Question

所以，我的代码是：

file = open("save_file.txt")

for each_line in file:
    s = {}
    (s['name'], s['race'], s['class'], s['FOR'], s['INT'], s['DES']) = each_line.split(";")
    print(s['name'])
    print(s['race'])
    print(s['class'])
    print(s['FOR'])
    print(s['INT'])
    print(s['DES'])
file.close()

save_file.txt：

Nome: d;Raça: Humano;Classe: Mago;FOR: 5;INT: 7;DES: 5
Nome: g;Raça: umano;Classe: Mo;FOR: 56;INT: 47;DES: 85

我希望程序只打印第一行，但我不想删除第二行。这可能吗？

Answer 1

在第一次迭代之后打破循环...

for each_line in file:
    s = {}
    (s['name'], s['race'], s['class'], s['FOR'], s['INT'], s['DES']) = each_line.split(";")
    print(s['name'])
    print(s['race'])
    print(s['class'])
    print(s['FOR'])
    print(s['INT'])
    print(s['DES'])
    break

Answer 2

决定不打印与删除非常不同。你可以这样做：

with open("save_file.txt") as f:
    for each_line in f:
        s = {}
        (s['name'], s['race'], s['class'], s['FOR'], s['INT'], s['DES']) = each_line.split(";")
        print(s['name'])
        print(s['race'])
        print(s['class'])
        print(s['FOR'])
        print(s['INT'])
        print(s['DES'])
        break  #<---

当遇到break并且只是从文件中打印一行时，它会跳出for循环。

此外，这使用with上下文管理器来避免以后必须显式关闭文件。

修改

# Read all lines into lines list, each element is a dictionary lines = [] with open("save_file.txt") as f: for line in f: s = {} (s['name'], s['race'], s['class'], s['FOR'], s['INT'], s['DES']) = line.split(";") lines.append(s) # Print first line s = lines[0] print(s['name']) print(s['race']) print(s['class']) print(s['FOR']) print(s['INT']) print(s['DES']) # Print second line s = lines[1] print(s['name']) print(s['race']) print(s['class']) print(s['FOR']) print(s['INT']) print(s['DES']) # Or with a Function def print_line(lines, num): s = lines[num] print(s['name']) print(s['race']) print(s['class']) print(s['FOR']) print(s['INT']) print(s['DES']) # Print third line print_line(lines, 2)

如何停止打印线？

2 个答案: