Working solution

Well, as @PiperMerriam said I used this library web3.py. The previous library than I used is no more updated. Now I can connect python web3 to my remote server node like this :

# Import
from web3 import Web3, HTTPProvider

# Connection to the remote server
web3rpc = Web3(HTTPProvider(host="136.10.164.134", port="8545")) 

# Unlock your account
duration = 1000
web3rpc.personal.unlockAccount(web3rpc.eth.coinbase, 'your-passphrase', duration)

# Syncing check
web3rpc.eth.syncing

# Transaction from account A to account B
web3rpc.eth.sendTransaction({'to': 'your_token_account', 'from': web3rpc.eth.coinbase, 'value': web3rpc.toWei(1, "wei"), 'data': web3rpc.toHex('Test Transaction')})

Using web3js library, here is how you do it on nodejs serverside

//generate private key    
privateKey = web3.eth.accounts.create().privateKey.substr(2)

//generates pubKey from privateKey, encrypts it and store in keystore folder.
web3.eth.personal.importRawKey(privateKey, pin)
    .then((result) => {

    //store pub address.
    publicAddr = web3.utils.toChecksumAddress(result)
})

...

There you go.