I have an entry type user control, and I would like the user to only be able to enter the following format:
Latitude, Length as for example "12.2323, -1.53452"
That is, you can only enter numbers, periods, 1 comma, and the minus sign. On the other hand I read that the latitude must be a number between -90 and 90 and the length between -180 and 180
How can I do this? With what functions can I support myself to carry out the validation? Thanks
You can use a regular expression:
import re
patron = re.compile('^(\-?\d+(\.\d+)?),\s*(\-?\d+(\.\d+)?)$') #patrón que debe cumplir
if (not patron.match(latitud) is None) and (not patron.math(longitud) is None):
#Código a ejecutar si son coordenadas válidas
else:
#Código a ejecutar si las coordenadas no son válidas
With import re we import the regular expression library.
re.compile() Compile a regular expression.
patron.match() Returns None if the variable does not follow the regular expression.
latitude and length are the variables where you have stored their respective values.
I have not added the check of whether the longitude and latitude are between -90 and 90, it's something trivial, I'm sure you can do it alone:)