deleting certain rows from multidimensional list

[aster]

The order of steps in your program:

1. Read a line
   
2. Convert data of the line
   
3. Make decision if data is in boundaries
   
4. If data is in boundaries -> yield data
   

At the end it's very easy. Make a function which decides if your data is in your boundaries and do something with it.
No need to make this strange nested iteration.

What you need to know:

• Exception handling
  
• argument unpacking
  
• keyword argument unpacking, if you're working with dicts. Not necessary.
  
• functions
  
• use of csv module
  
• knowledge of iterables, csv.reader is an iterator
  
• comparison with more than one value (min_val < val < max_val)
  
• logical operations: and, or, not
  

DeaD_EyE, i really love your coding style and the simplicity and comment you used to let me understand everythings.
I losted 1 hour trying to make the nested itineration working while you did it in a simpler and nicer way. I think i am still using a C style way and in python i shouldn't use the same approach i am used to
i really liked how did you manage the errors, as an hobbyist i am not used to this but i know that good programmers and code manage all the possibilities

the map function is very powerful, i didn't know about it (well in C it is something very different ) i will use it in the future for sure

the only thing i didn't understand well, even if i read the doc, was the partial(), i found it so confusing that i decided to remove it and made it more readeable for myself:

lat_min= 37.547550
lat_max= 37.547570
lon_min= 15.143184
lon_max= 15.143196
    
def in_boundaries(lat, lon):
    return lat_min < lat < lat_max and lon_min < lon < lon_max 
  

i know this is not good as your but it works the same and for me is sympler

using your code i just had to append() the good value in a new list and i have my new database ready to be written in a new csv file

again I say you a big thank you