I'm trying to manage my data by storing it under config file. I ran into issue while I was creating my file that the URL contains '%20' and it returned the following error msg:

```
 raise ValueError("invalid interpolation syntax in %r at "

```

Here is an example of my URL format (a lil bit context here: I'm using it to get API request)

```
https://api.abc.com/a0/asaknfalhiasfna/Test%20Name?failed=why+why+why

```

And this is what I had in my config.py

```
import configparser
config = configparser.ConfigParser()

config['ClientProd'] = {'url': 'https://api.abc.com/a0/asaknfalhiasfna/Test%20Name?failed=why+why+why',
'response': 'id'}

with open('conf.ini', 'w') as configfile:
    config.write(configfile)

```

Here is the reference on what I'm trying to achieve: [link](https://stackoverflow.com/questions/48572494/structuring-api-calls-in-python)  

How can I encode the **%20** in the URL here? Any help would be greatly appreciate it, thank you in advance.