将字符串拆分为整数部分和字符串部分的最佳方法是什么？

Question

我有一个像这样的字符串“ 11547QSD”。我想将其分为“ 11547”和“ QSD”两个部分。我得到了isnumeric（）函数的提示。我正在概述一下。请向我建议最好的分解方法。 str1 = "11547QSD"    # is a valid string (in my context) str2 = "ABC98765"    # is a valid string str3 = "111ABC111"   # is not a valid string if str1.isvalid():    str1_int = str1.integer_part()    str1_str = str1.string_part()

Answer 1

from string import ascii_letters, digits

s_int, s_str = sorted([s.strip(ascii_letters), s.strip(digits)])

is_valid = s in {s_int+s_str, s_str+s_int}

Answer 2

主要是为了娱乐：

ss  = ["11547QSD", "ABC98765", "111ABC111"]

fmt = r'\A(?P<full>{0}{1})\Z'

ps  = [r'(?P<digits>\d+)', r'(?P<letters>[A-Z]+)']

fs  = [fmt.format(*sorted(ps, reverse = b)) for b in [False, True]]

rs  = [re.compile(f) for f in fs]

ms  = filter(None, (r.search(s) for s in ss for r in rs))

gds = [m.groupdict() for m in ms]

for gd in gds:

    print gd

# Output:

# {'digits': '11547', 'full': '11547QSD', 'letters': 'QSD'}

# {'digits': '98765', 'full': 'ABC98765', 'letters': 'ABC'}