How can we replace quotation marks in a string in a list?-CodePudding

I have a string causing a bit of a problem. This is my string.

my_string = "'{'place_id': X, 'licence': 'X', 'osm_type': 'X', 'osm_id': X,'boundingbox': X, 'lat': 'X', 'lon': 'X', 'display_name': 'X', 'class': 'X', 'type': 'X','importance': X})'"

If I don't have "' at the beginning and '" at the end, it's not treated as a string.

Maybe I am creating the string the wrong way. Not sure. Anyway, this is what I end up with.

["'{'place_id': X, 'licence': 'X', 'osm_type': 'X'}'",
{'place_id': 177948251,
  'licence': 'Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright',
  'osm_type': 'way'},
{'place_id': 306607940,
  'licence': 'Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright',
  'osm_type': 'way'}]

I'm trying to convert this list to a dataframe but I'm getting this error:

'AttributeError: 'str' object has no attribute 'keys''

I think the problem comes from the first item in the list having this:

"' and '"

So, I tried to do a str.replace on the items in the list, like this.

new_strings = []
for j in final_list:
   new_string = str.replace("""'{""", "{") 
   new_string = str.replace("""}'""", "}")
   new_strings.append(new_string)
   
my_df = pd.DataFrame(new_string)

When I try to run that, I get this error.

Traceback (most recent call last):

  File "<ipython-input-83-424d9a0504f8>", line 3, in <module>
    new_string = str.replace("""'{""","{")

TypeError: replace expected at least 2 arguments, got 1

Any idea how to get this straightened out?

CodePudding user response：

Maybe this helps you. Note that I putted ' around X as I think it is a typo in the original one.

import json

old_list = [
    "'{'place_id': 'X', 'licence': 'X', 'osm_type': 'X'}'",
    {
        'place_id': 177948251,
        'licence': 'Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright',
        'osm_type': 'way'
    },
    {
        'place_id': 306607940,
        'licence': 'Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright',
        'osm_type': 'way'
    }
]

new_list = []
for item in old_list:
    if isinstance(item, str):
        # if we strip the surrounding ' and replace all other ' with "
        # this looks like a json document
        item_json = item.strip("'").replace("'", '"')
        item_dict = json.loads(item_json)
        new_list.append(item_dict)
    elif isinstance(item, dict):
        # perfect, we can keep this item as it is
        new_list.append(item)
    else:
        # oh oh, we got an unexpected type
        raise TypeError