Python打印特定图案

Question

我有三个列表和一个字符串变量：

var = "http:/domain.com"
directories = ['dir_A', 'dir_B', 'dir_C']
files = ['file_A', 'file_B', 'file_C']
extensions = ['ext_A', 'ext_B']

我想打印一个完全像这样的图案：

http:/domain.com/

http:/domain.com/dir_A/
http:/domain.com/dir_A/file_A.ext_A
http:/domain.com/dir_A/file_A.ext_B
http:/domain.com/dir_A/file_B.ext_A
http:/domain.com/dir_A/file_B.ext_B
http:/domain.com/dir_A/file_C.ext_A
http:/domain.com/dir_A/file_C.ext_B

http:/domain.com/dir_A/dir_B/
http:/domain.com/dir_A/dir_B/file_A.ext_A
http:/domain.com/dir_A/dir_B/file_A.ext_B
http:/domain.com/dir_A/dir_B/file_B.ext_A
http:/domain.com/dir_A/dir_B/file_B.ext_B
http:/domain.com/dir_A/dir_B/file_C.ext_A
http:/domain.com/dir_A/dir_B/file_C.ext_B

http:/domain.com/dir_A/dir_B/dir_C/
http:/domain.com/dir_A/dir_B/dir_C/file_A.ext_A
http:/domain.com/dir_A/dir_B/dir_C/file_A.ext_B
http:/domain.com/dir_A/dir_B/dir_C/file_B.ext_A
http:/domain.com/dir_A/dir_B/dir_C/file_B.ext_B
http:/domain.com/dir_A/dir_B/dir_C/file_C.ext_A
http:/domain.com/dir_A/dir_B/dir_C/file_C.ext_B

http:/domain.com/dir_A/dir_C/
http:/domain.com/dir_A/dir_C/file_A.ext_A
http:/domain.com/dir_A/dir_C/file_A.ext_B
http:/domain.com/dir_A/dir_C/file_B.ext_A
http:/domain.com/dir_A/dir_C/file_B.ext_B
http:/domain.com/dir_A/dir_C/file_C.ext_A
http:/domain.com/dir_A/dir_C/file_C.ext_B

http:/domain.com/dir_A/dir_C/dir_B/
http:/domain.com/dir_A/dir_C/dir_B/file_A.ext_A
http:/domain.com/dir_A/dir_C/dir_B/file_A.ext_B
http:/domain.com/dir_A/dir_C/dir_B/file_B.ext_A
http:/domain.com/dir_A/dir_C/dir_B/file_B.ext_B
http:/domain.com/dir_A/dir_C/dir_B/file_C.ext_A
http:/domain.com/dir_A/dir_C/dir_B/file_C.ext_B

这只适用于http:/domain.com/dir_A/...

案件{}和{}的子案

我自己也试过，但没有成功达到要求的模式

任何帮助都将不胜感激

Answer 1

如果您想自己实现生成目录的各种排列，可以使用递归函数。一旦有了目录，文件和扩展名就很简单了

#!/usr/bin/env python

var = "http:/domain.com"
directories = ["dir_A", "dir_B", "dir_C"]
files = ["file_A", "file_B", "file_C"]
extensions = ["ext_A", "ext_B"]

root = var + '/'

def combos(dirs):
    if len(dirs) == 1:
        return [dirs[:]]
    else:
        c = []
        for i in range(len(dirs)):
            c.append([dirs[i]])
            c.extend([[dirs[i]] + combo
                      for combo in combos(dirs[:i] + dirs[i+1:])])
        return c


print(root)
for combo in combos(directories):
    prefix = root + ''.join([d + '/' for d in combo])
    print('\n' + prefix)
    for file in files:
        for ext in extensions:
            print(prefix + file + '.' + ext)

输出：

http:/domain.com/

http:/domain.com/dir_A/
http:/domain.com/dir_A/file_A.ext_A
http:/domain.com/dir_A/file_A.ext_B
http:/domain.com/dir_A/file_B.ext_A
http:/domain.com/dir_A/file_B.ext_B
http:/domain.com/dir_A/file_C.ext_A
http:/domain.com/dir_A/file_C.ext_B

http:/domain.com/dir_A/dir_B/
http:/domain.com/dir_A/dir_B/file_A.ext_A
http:/domain.com/dir_A/dir_B/file_A.ext_B
http:/domain.com/dir_A/dir_B/file_B.ext_A
http:/domain.com/dir_A/dir_B/file_B.ext_B
http:/domain.com/dir_A/dir_B/file_C.ext_A
http:/domain.com/dir_A/dir_B/file_C.ext_B

http:/domain.com/dir_A/dir_B/dir_C/
http:/domain.com/dir_A/dir_B/dir_C/file_A.ext_A
http:/domain.com/dir_A/dir_B/dir_C/file_A.ext_B
http:/domain.com/dir_A/dir_B/dir_C/file_B.ext_A
http:/domain.com/dir_A/dir_B/dir_C/file_B.ext_B
http:/domain.com/dir_A/dir_B/dir_C/file_C.ext_A
http:/domain.com/dir_A/dir_B/dir_C/file_C.ext_B

http:/domain.com/dir_A/dir_C/
http:/domain.com/dir_A/dir_C/file_A.ext_A
http:/domain.com/dir_A/dir_C/file_A.ext_B
http:/domain.com/dir_A/dir_C/file_B.ext_A
http:/domain.com/dir_A/dir_C/file_B.ext_B
http:/domain.com/dir_A/dir_C/file_C.ext_A
http:/domain.com/dir_A/dir_C/file_C.ext_B

http:/domain.com/dir_A/dir_C/dir_B/
http:/domain.com/dir_A/dir_C/dir_B/file_A.ext_A
http:/domain.com/dir_A/dir_C/dir_B/file_A.ext_B
http:/domain.com/dir_A/dir_C/dir_B/file_B.ext_A
http:/domain.com/dir_A/dir_C/dir_B/file_B.ext_B
http:/domain.com/dir_A/dir_C/dir_B/file_C.ext_A
http:/domain.com/dir_A/dir_C/dir_B/file_C.ext_B

http:/domain.com/dir_B/
http:/domain.com/dir_B/file_A.ext_A
http:/domain.com/dir_B/file_A.ext_B
http:/domain.com/dir_B/file_B.ext_A
http:/domain.com/dir_B/file_B.ext_B
http:/domain.com/dir_B/file_C.ext_A
http:/domain.com/dir_B/file_C.ext_B

http:/domain.com/dir_B/dir_A/
http:/domain.com/dir_B/dir_A/file_A.ext_A
http:/domain.com/dir_B/dir_A/file_A.ext_B
http:/domain.com/dir_B/dir_A/file_B.ext_A
http:/domain.com/dir_B/dir_A/file_B.ext_B
http:/domain.com/dir_B/dir_A/file_C.ext_A
http:/domain.com/dir_B/dir_A/file_C.ext_B

http:/domain.com/dir_B/dir_A/dir_C/
http:/domain.com/dir_B/dir_A/dir_C/file_A.ext_A
http:/domain.com/dir_B/dir_A/dir_C/file_A.ext_B
http:/domain.com/dir_B/dir_A/dir_C/file_B.ext_A
http:/domain.com/dir_B/dir_A/dir_C/file_B.ext_B
http:/domain.com/dir_B/dir_A/dir_C/file_C.ext_A
http:/domain.com/dir_B/dir_A/dir_C/file_C.ext_B

http:/domain.com/dir_B/dir_C/
http:/domain.com/dir_B/dir_C/file_A.ext_A
http:/domain.com/dir_B/dir_C/file_A.ext_B
http:/domain.com/dir_B/dir_C/file_B.ext_A
http:/domain.com/dir_B/dir_C/file_B.ext_B
http:/domain.com/dir_B/dir_C/file_C.ext_A
http:/domain.com/dir_B/dir_C/file_C.ext_B

http:/domain.com/dir_B/dir_C/dir_A/
http:/domain.com/dir_B/dir_C/dir_A/file_A.ext_A
http:/domain.com/dir_B/dir_C/dir_A/file_A.ext_B
http:/domain.com/dir_B/dir_C/dir_A/file_B.ext_A
http:/domain.com/dir_B/dir_C/dir_A/file_B.ext_B
http:/domain.com/dir_B/dir_C/dir_A/file_C.ext_A
http:/domain.com/dir_B/dir_C/dir_A/file_C.ext_B

http:/domain.com/dir_C/
http:/domain.com/dir_C/file_A.ext_A
http:/domain.com/dir_C/file_A.ext_B
http:/domain.com/dir_C/file_B.ext_A
http:/domain.com/dir_C/file_B.ext_B
http:/domain.com/dir_C/file_C.ext_A
http:/domain.com/dir_C/file_C.ext_B

http:/domain.com/dir_C/dir_A/
http:/domain.com/dir_C/dir_A/file_A.ext_A
http:/domain.com/dir_C/dir_A/file_A.ext_B
http:/domain.com/dir_C/dir_A/file_B.ext_A
http:/domain.com/dir_C/dir_A/file_B.ext_B
http:/domain.com/dir_C/dir_A/file_C.ext_A
http:/domain.com/dir_C/dir_A/file_C.ext_B

http:/domain.com/dir_C/dir_A/dir_B/
http:/domain.com/dir_C/dir_A/dir_B/file_A.ext_A
http:/domain.com/dir_C/dir_A/dir_B/file_A.ext_B
http:/domain.com/dir_C/dir_A/dir_B/file_B.ext_A
http:/domain.com/dir_C/dir_A/dir_B/file_B.ext_B
http:/domain.com/dir_C/dir_A/dir_B/file_C.ext_A
http:/domain.com/dir_C/dir_A/dir_B/file_C.ext_B

http:/domain.com/dir_C/dir_B/
http:/domain.com/dir_C/dir_B/file_A.ext_A
http:/domain.com/dir_C/dir_B/file_A.ext_B
http:/domain.com/dir_C/dir_B/file_B.ext_A
http:/domain.com/dir_C/dir_B/file_B.ext_B
http:/domain.com/dir_C/dir_B/file_C.ext_A
http:/domain.com/dir_C/dir_B/file_C.ext_B

http:/domain.com/dir_C/dir_B/dir_A/
http:/domain.com/dir_C/dir_B/dir_A/file_A.ext_A
http:/domain.com/dir_C/dir_B/dir_A/file_A.ext_B
http:/domain.com/dir_C/dir_B/dir_A/file_B.ext_A
http:/domain.com/dir_C/dir_B/dir_A/file_B.ext_B
http:/domain.com/dir_C/dir_B/dir_A/file_C.ext_A
http:/domain.com/dir_C/dir_B/dir_A/file_C.ext_B

Answer 2

我猜你想要正斜杠，但我按照你的要求编码了。您忘记在提示符中引用一些字符串

#!/usr/bin/env python3
import itertools

var = "http:/domain.com"
directories = ["dir_A", "dir_B", "dir_C"]
files = ["file_A", "file_B", "file_C"]
extensions = ["ext_A", "ext_B"]

print(var + "/")
print()
for dir in directories:
  print(var + "/" + dir + "/")
  for i in list(itertools.product(files, extensions)):
    print("%s/%s/%s.%s" % (var, dir, i[0], i[1]))
  print()

Answer 3

您需要^{}模块中的combinations、permutations和product来获取所有这些变体：

from itertools import permutations, combinations, product
def combine(dom, dirs, files, exts):
    return ('/'.join((dom, *perm, f"{f}.{e}"))
            for i in range(len(dirs)+1)
            for comb in combinations(dirs, i)
            for perm in permutations(comb)
            for f, e in product(files, exts))
                
for x in combine(var, directories, files, extensions):
    print(x)

输出（总共96个；请注意，我将所有\更改为/并更改了域）：

http://example.com/file_A.ext_A
...
http://example.com/dir_A/dir_C/file_C.ext_B
...
http://example.com/dir_C/dir_B/dir_A/file_C.ext_B