How to verify string type geographic coordinates are in the correct format?-CodePudding

I have :

coordinates = '50.0572, 1.20575'

coordinates is string type.

50.0572 is latitude 1.2057 is longitude

I would like to find the simplest solution to verify that coordinates is in the format of type: XX.XX, XX.XX

Example : if coordinates = '120, 1.20' => False => bad format (error on 120)

Thank you.

CodePudding user response：

You can first .split(',') then check .isdigit() if get True you have int number and you find bad format.

try this:

>>> coordinates = '120, 1.20'
>>> [cor.isdigit() for cor in coordinates.split(',')]
[True, False]

>>> coordinates = '50.0572, 1.20575'
>>> if not any(cor.isdigit() for cor in coordinates.split(',')):
...    print("we don't have bad format")

we don't have bad format

If you want to use regex you can use re.compile() then use match like below:

>>> import re
>>> flt_num = re.compile(r'\d .\d ')

>>> coordinates = '120, 1.20'
>>> for cor in coordinates.split(','):
...    if flt_num.match(cor):
...        print(f'{cor} has bad format')

120 has bad format