如何将具有数字范围的文本文件转换为列表变量？

Question

我有一个文本文件，里面有：

8-9、12、14-16、19、27-28、33、41、43、45-46、48-49、51、54-60、62-74、76-82、84-100、102-105、107-108

它基本上是文本文件中整数的列表。使用Python，我希望将其转换为一个列表，其中每个变量都分别存储。但问题是，数字之间的斜线代表一个范围，这意味着62-74实际上是62,63,64,65,66,67,68,69,70,71,72,73,74。

因此，我的程序应该能够阅读文本，如果它遇到任何破折号，它应该附加在该范围内的数字列表。

你知道怎么做吗？

我试图在文本文件中创建一个带有整数的列表。

Answer 1

试试这个：

num_list = ["8-9", "12", "14-16", "19", "27-28", "33", "41", "43", "45-46", "48-49", "51","54-60", "62-74", "76-82", "84-100", "102-105", "107-108"]
output_list = []

for number in num_list:
    if "-" in number: # Checks if the string contains "-"
        num1, num2 = number.split(sep="-") # Splits the numbers
        num1 = int(num1) # Setting the number from string to integer
        num2 = int(num2) # Setting the number from string to integer
        while num1 <= num2:
            output_list.append(num1) # append to output list
            num1 += 1
    else:
        output_list.append(int(number)) # append to output list

print(output_list)

输出：

[8, 9, 12, 14, 15, 16, 19, 27, 28, 33, 41, 43, 45, 46, 48, 49, 51, 54, 55, 56, 57, 58, 59, 60, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 76, 77, 78, 79, 80, 81, 82, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 102, 103, 104, 105, 107, 108]

Answer 2

您只想检查字符串中是否有"-"。如果有，则使用内置的range函数生成列表。这可能对你有用。

vals = [
    "8-9", "12", "14-16", 
    "19", "27-28", "33", 
    "41", "43", "45-46", 
    "48-49", "51", "54-60", 
    "62-74", "76-82", "84-100", 
    "102-105", "107-108"
]

output = []
for val in vals:
    if "-" not in val:
        output.append(int(val))
    else:
        bounds = val.split("-")
        output += [i for i in range(int(bounds[0]), int(bounds[1])+1)]

print(output)
# >>> [8, 9, 12, 14, 15, 16, 19, 27, 28, 33, 41, 43, 45, 46, 48, 49, 51, 54, 55, 56, 57, 58, 59, 60, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 76, 77, 78, 79, 80, 81, 82, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 102, 103, 104, 105, 107, 108]

Answer 3

with open("list.txt","f") as f:
   content = f.read()
   result = [x for rng in content.split(",") for x in range(*map(int, rng.split("-")))]

这是一个很酷的解决方案，但是您的范围是包容性的，python的范围不是:/

因此：

def inclusive_range(start, stop=None):
    if stop:
       return range(start, stop+1)
    else:
       return range(start)


with open("list.txt","f") as f:
   content = f.read()
   result = [x for rng in content.split(",") for x in inclusive_range(*map(int, rng.split("-")))]