Please help with converting below code to python language

CODE:

package com.src;

import java.util.Locale;

import java.util.Objects;

import java.util.Random;

class RandomString {

/**

* Generate a random string.

*/

public String nextString() {

for (int idx = 0; idx < buf.length; ++idx)

buf[idx] = symbols[random.nextInt(symbols.length)];

return new String(buf);

}

public static final String upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

public static final String lower = upper.toLowerCase(Locale.ROOT);

public static final String space = " ";

public static final String alphanum = upper + lower + space;

private final Random random;

private final char[] symbols;

private final char[] buf;

public RandomString(int length, Random random, String symbols) {

if (length < 1) throw new IllegalArgumentException();

if (symbols.length() < 2) throw new IllegalArgumentException();

this.random = Objects.requireNonNull(random);

this.symbols = symbols.toCharArray();

this.buf = new char[length];

}

/**

* Create an alphanumeric string generator.

*/

public RandomString(int length, Random random) {

this(length, random, alphanum);

}

/**

* Create an alphanumeric strings from a secure generator.

*/

public RandomString(int length) {

this(length, new Random());

}

/**

* Create session identifiers.

*/

public RandomString() {

this(21);

}

}

public class Assignment1Demo {

private static String msg;

private static String msgE;

private static String msgD;

private static int key;

public static void main(String[] args){

//TODO: You can only call methods in main method

key = generateKey();

msg = generateMsg();

msgE = encryption(key,msg);

bruteForce(msgE);

}

private static int generateKey() {

//TODO: implement step a (randomly generate 16-bit key)

//16 bit digit means 2^16 -1 in decimal

Random rand = new Random();

return rand.nextInt((int) (Math.pow(2, 16)-1));

}

private static String generateMsg() {

//TODO: implement step b (randonly generate a string with an even number of characters)

RandomString str = new RandomString();

String randString = str.nextString();

if(randString.length() %2 != 0)

randString += " ";

return randString;

}

private static String encryption(int key, String msg) {

//TODO: implement step c (encrypt the message)

String Key = Integer.toString(key);

for(int i=0;i<=msg.length()/2;i++){

Key += Key;

}

return (msg + key);

}

private static void decryption(int key, String msgE) {

//TODO: implement step d (decryption)

String Key = Integer.toString(key);

for(int i=0;i<=msg.length()/2;i++){

Key += Key;

}

msgD = msgE + Key;

}

private static void bruteForce(String msgE) {

//TODO: implement bruteForce algorithm, you may need the above decryption(key,msgE) method

boolean isEnglisString = msgE.matches("[a-zA-Z]+");

if(isEnglisString)

System.out.println("Yes encrypted message is Randomly English generated message " + msgE);

else

System.out.println("encrypted message is Not Randomly english generated message "+msgE);

decryption(key, msgE);

isEnglisString = msgD.matches("[a-zA-Z]+");

if(isEnglisString)

System.out.println("Yes decrypted message is Randomly english generated message "+ msgD);

else

System.out.println("decrypted message is not Randomly english generated message "+ msgD);

}

}