CODEWITHSUNDEEP
python
user12775187
user12775187

Reputation:

How to find a particular combination of string and float/int?

I have the following question. As input I have a datename, which must have a certain nomenclature, like

  1. Footballfield_01_CampNou_108m_Length_68.5_Width
  2. Footballfield_02_Bernabeau_105m_Length_68.5_Width

For the width the meter is missing. But I cannot change the name and have to work with this. My task now is to write a code, which extracts only the length and the width from the data name to calculate the area on it. I have had several ideas, but these are error-prone and not robust enough. My idea now is based on knowing that I have an integer value (length) and a float value (width). I want to write a code that finds the float value and the integer value in the string and assigns them to the width and length but I can't find any way, can anyone help me?

Upvotes: 0

Views: 256

Answers (1)

Ryan Schaefer
Ryan Schaefer

Reputation: 3120

Seems like you could use regex to solve this task:

import re
//somehow get the input_list
for entry in input_list:
    match = re.match(r"\w+_\d+_\w+_(\d+)m_Length_(([0-9]*[.])?[0-9]+)_Width", entry)
    length, width, _ = match.groups()
    length = int(length)
    width = float(width)

going into more detail about the regex:

  • \w+ matches alphabetical characters
  • \d+ matches digits
  • _ matches _ literally
  • () around a some regex captures that value to return
  • (([0-9]*[.])?[0-9]+) is caputuring the floating point part as explained here Regular expression for floating point numbers

https://regex101.com/r/8BOvMh/1 example working online

Upvotes: 1

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