You can run this script to select DM or guild channels and send translated messages. (ONLY FOR SENDING MESSAGES NOT RECIEVING)

discord-translate.py

import requests

discord_base_url = 'https://discord.com/api/v8'
translation_base_url = 'https://api.mymemory.translated.net/get?q={0}&langpair={1}|{2}'


class Client:
    def __init__(self, token):
        self.token = token
        self.selected_channel = None
        self.input_lang = 'en'
        self.out_lang = 'pt'

    def get_header(self, token=None):
        if not token:
            token = self.token
        return {'Authorization': token, 'Content-Type': 'application/json'}

    @staticmethod
    def response_ok(status_code):
        return status_code in range(200, 204)

    def get_channel_by_id(self, channel_id=None):
        if not channel_id:
            channel_id = self.selected_channel
        header = self.get_header()
        r = requests.get(f'{discord_base_url}/channels/{channel_id}', headers=header)
        if self.response_ok(r.status_code):
            data = r.json()
            return data
        return None

    def send_message(self, message, channel_id=None):
        if not channel_id:
            channel_id = self.selected_channel
        header = self.get_header()
        r = requests.post(f'{discord_base_url}/channels/{channel_id}/messages',
                          headers=header, json={
                "content": message,
                "tts": False,
            })
        if self.response_ok(r.status_code):
            return True
        return False

    def translate(self, text, from_lang='en', to_lang=None):
        if not from_lang:
            from_lang = self.input_lang
        if not to_lang:
            to_lang = self.out_lang

        words = '+'.join(word for word in text.split())
        r = requests.get(translation_base_url.format(words, from_lang, to_lang))
        if r.status_code in range(200, 204):
            data = r.json()
            matches = []
            best_match = None
            for match in data['matches']:
                if not best_match:
                    best_match = match
                else:
                    if match['match'] > best_match['match']:
                        best_match = match
            return best_match['translation']
        return None


command_prefix = '!'

discord_token = ''
user_client = Client(token=discord_token)

running = True

if __name__ == '__main__':
    while running:
        cmd = input('> ')
        args = cmd.split()
        if len(args) >= 4:
            if args[0] == command_prefix:
                if args[1] == 'set':
                    if args[2] == 'channel':
                        channel_id = args[3]
                        channel = user_client.get_channel_by_id(channel_id)
                        if channel:
                            print('Selected Channel: ' + str(channel))
                            user_client.selected_channel = channel_id
                        else:
                            print('Could not find channel..')
                    elif args[2] == 'input':
                        user_client.input_lang = args[3].lower()
                    elif args[2] == 'output':
                        user_client.out_lang = args[3].lower()
                    else:
                        print('Invalid selection argumention.')

            else:
                message = ' '.join(w for w in args[1:])
                translated_message = user_client.translate(message)
                sent = user_client.send_message(translated_message)
                if not sent:
                    print('Failed to send.')
                else:
                    print('Sent.')
        else:
            message = ' '.join(w for w in args[1:])
            translated_message = user_client.translate(message)
            sent = user_client.send_message(translated_message)
            if not sent:
                print('Failed to send.')
            else:
                print('Sent.')

howto.txt

# Syntax!

**Select a channel**
```
! set channel CHANNEL_ID
```

**Select input language**
```
! set input LANG_CODE
```

**Select output language**
```
! set output LANG_CODE
```

**Yes, there is a space between the command prefix and first argument!**
**To send messages just type your message without the command prefix and hit enter!**