Question

我有一个string，其中包含单词格式的数字（带字符串前缀）。我想将其转换为整数格式的数字字符串（字符串前缀保持原样）。以下是字符串的一些示例数据：

"m.l. one two three four"
"k.f two seven six eight"
"g.h three nine zero four"

我希望他们每个人都转换为：

"ML1234"
"KF2768"
"GH3904"

我环顾四周，但无法找到相关的问题（大多数SO问题都与将数十，数百，数千转换为整数有关。）

我该怎么转换呢？

Answer 1

一个简单的解决方案：

string = "m.l. one two three four"

text_dict = {'one':1, 'two':2, 'three':3, 'four':4, 'five':5, 'six': 6, 'seven':7, 'eight':8, 'nine':9, 'zero':0}
split = string.split()
numerized = [str(text_dict[word]) for word in split[1:]]
prefix = split[0].upper().replace(".","")
print ("".join([prefix] + numerized))

输出：

ML1234

Answer 2

functools.reduce的解决方案：

from functools import reduce

text = "m.l. one two three four"

rep = [(" zero", "0"), (" one", "1"), (" two", "2"), (" three", "3"),
       (" four", "4"), (" five", "5"), (" six", "6"), (" seven", "7"),
       (" eight", "8"), (" nine", "9"), (".", "")]
t = reduce(lambda a, kv: a.replace(*kv), rep, text.lower()).upper()
print(t)

输出：

ML1234

Answer 3

data = "m.l. one two three four"
numbers = {
    "one":1,
    "two":2,
    "three":3,
    "four":4,
    "five":5,
    "six":6,
    "seven":7,
    "eight":8,
    "nine":9,
    "zero":0
}
def num_map(str):
    return numbers[str]
data = data.split()
# data[0] will be having chars, rest are numbers

tmp =  ''.join(data[0].split('.')[:-1])
tmp += ''.join(map(str,map(num_map, data[1:])))
print tmp.upper()

将字符串映射到int，反之亦然

Answer 4

除了必须使用reduce函数或名为words2num的小型库外，您还有很多选择可供选择。

如果您使用的是python 2.x，则可以直接包含reduce，或者如果您使用的是python 3.x，请使用functools.reduce。

来自umutto的回答：Python 2.x

text = "m.l. one two three four"

rep = [(" zero", "0"), (" one", "1"), (" two", "2"), (" three", "3"),
   (" four", "4"), (" five", "5"), (" six", "6"), (" seven", "7"),
   (" eight", "8"), (" nine", "9"), (".", "")]
t = reduce(lambda a, kv: a.replace(*kv), rep, text.lower()).upper()
print t

输出

ML1234

这就够了。如果您想使用库words2num是一个不错的选择

1，安装words2num

pip install words2num

2，导入'words2num'

from words2num import w2n

3，使用w2n()函数

创建代码

string = "m.l. one two three four"

word_str = string.split(" ")
result = ""

for i in word_str:
    try:
            result += str(w2n(i))
    except:
            words = i.upper().split(".")
            result += "".join(words)
print result

输出

ML1234

如何将由字数组成的字符串转换为python中整数格式的数字字符串

4 个答案: