如何使用python搜索列表/数组中的字母? [英] How to search letter in list/array using python?

问题描述

我有一个这样的列表/数组.

I have one list/array like this.

ch = [ eretail, retail, fax, xerox ]

我尝试使用单个/多个字母来提取字符串.

I tried fetch strings using single/multiple letters.

例如，我发送了"e"字母作为输入.如果与字符串匹配，它将搜索整个字符串，该字符串将显示为输出

for example, i sent 'e' letter as input. it will search entire string, incase it will match with string, the string will display as output

示例:

1)Input:   e
  output:  eretail
           retail
           xerox
2)Input: x
  output:  fax
           xerox
3)Input: o
  output: xerox

4)Input: retail
  output: eretail
          retail

我需要上面的输出.

推荐答案

您可能需要执行以下操作:

You might need to do something like this :

import re

ch = ['eretail', 'retail', 'fax', 'xerox']

input = ['e', 'x', 'o', 'retail']

for each in input:
    search = each + '+'
    output = []
    for i in ch:
        if(re.findall(each, i)):
            output.append(i)
    print('Input', each, '\n', 'output', output)

结果:

Input e 
 output ['eretail', 'retail', 'xerox']
Input x 
 output ['fax', 'xerox']
Input o 
 output ['xerox']
Input retail 
 output ['eretail', 'retail']

或者，以防万一输入不是数组:

import re

ch = ['eretail', 'retail', 'fax', 'xerox']

input = 'e'
search = input + '+'
output = []

for i in ch:
    if(re.findall(search, i)):
        output.append(i)

print('Input', input, '\n', 'output', output)

结果:

Input e 
 output ['eretail', 'retail', 'xerox']

请尝试上面的代码，我是python的初学者-如果需要增强此答案，请编辑此答案. re也是本示例中使用的python内置的Regex模块.

Please try the above code, I'm a beginner in python - edit this answer if it needs to be enhanced. Also re is python's built-in Regex module that is being used in this example.

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