V's game/Python

import os
import time

#RESIZE TERMINAL
#os.system('mode con: cols=100 lines=20')


#clear screen function in console
def cls():
    os.system('cls' if os.name=='nt' else 'clear')

#Variables==============================================
p_command = ""
health = 100 #Hitpoints
damage = 10 #player damage
msg = "" #text box var
ePosition = 5 #enemy position
pPosition = 1 #player position
level = ["[]","___","___","___","___","___","[]"] #5 movable posit, 2 walls
max_forward_bounds = len(level)-2 #sets the player bounds of the level
#=======================================================

#FUNCTIONS===================================================================
#DEATH CHECK============================================
def death(): #If health reaches 0 or below this kills the game
    global health
    if health <= 0:
        cls()
        input("DEATH.")
        raise SystemExit(0)
#=======================================================

#Update the graphical portion of the screen=============
def display():
    cls()#clears the previous screen
    global health,ePosition,pPosition,level#load global variables
    print('HP:' + str(health)+'|'+ msg)#prints stats
    print("ATK:"+str(damage))
    if pPosition != ePosition:
        level[pPosition] = '_V_'#places player graphic based off of pPosition
    else:
        level[pPosition] = '_X_' #battle graphic if pPosition == ePosition
    print(''.join(level))#prints the level list without brackets
#=======================================================

#User Input=============================================
def command(): #accept user input, as str, turns lowercase
    global p_command
    p_command = str(input("Enter command:"))
    p_command = p_command.lower()
#=======================================================

#Forward command========================================
def go_forward():
    global p_command, pPosition, max_forward_bounds,level,ePosition,msg
    if p_command == "go":
        if pPosition < max_forward_bounds : #Limit the max allowable bounds of level
            level[pPosition] = '___'#replaces player graphic with empty graphic
            pPosition += 1 #moves the player by one space
            msg = "-->" #points right just for flair
        else:
            msg = "Cannot proceed."#If you are at the edge of the level
#=======================================================

#HEAL command===========================================
def heal_player():
    global health, p_command, msg
    if p_command == 'heal':
        if health <= 80:
            health += 20
            msg = "Healed 20HP"
            display()
            time.sleep(1)

        elif health >80 and health < 100:
            remaining_hp = 100 - health
            health = 100
            msg = "Healed " + str(remaining_hp) + "HP"
            display()
            time.sleep(1)
        elif health == 100:
            msg = "HP already full"
            display()
            time.sleep(1)
        msg = ''
#=======================================================

#BACKWARDS COMMAND======================================
def go_backwards():
    global p_command, pPosition,level,msg
    if p_command == 'back':
        if pPosition > 1: #prevents going out of starting bounds
            level[pPosition] = '___'#replaces old position with tile graphic
            pPosition -= 1 #moves the player back one space
            msg = "<--" #Left arrow
        else:
            msg = "Cannot go back."
#=======================================================



#ENEMY BATTLE===========================================
def enemy():
    global health, damage, msg, ePosition,pPosition,level
    if pPosition == ePosition:
        enemy_health = 100
        enemy_attack = 5
        msg = "Enemy:Troll:" + "HP:"+str(enemy_health)
        while True:
            death()
            msg = "Enemy:Troll:" + "HP:"+str(enemy_health)
            display()
            command()
            heal_player()
            if p_command == 'attack':
                enemy_health = enemy_health - damage
                msg = "Attacked enemy for "+str(damage)
                display()
                time.sleep(1)
            if enemy_health > 0:
                health = health - enemy_attack
                msg = "Attacked by enemy for "+str(enemy_attack)+"HP"
                display()
                time.sleep(1)
            else:
                msg = "Killed enemy."
                damage = damage + 10
                ePosition = -1
                display()
                time.sleep(3)
                break
#=======================================================




#FUNCTIONS END===============================================================



#Main code loop, brings up display func, needs player input to run
while True:
    #Death check========================================
    death()
    #===================================================

    #Update Display=====================================
    display()
    #===================================================

    #Enemy encounter====================================
    enemy()

    #User input=========================================
    command()
    #===================================================

    #Forward command. Prevents going out of bounds======
    go_forward()
    #===================================================

    #Restore hitpoints==================================
    heal_player()
    #===================================================

    #Backwards command==================================
    go_backwards()

    #Game Exit Command==================================
    if p_command == 'exit':
        input("Game Over")
        raise SystemExit(0)#exits the program
    #===================================================

    #Self Wound command=================================
    if p_command == 'hurt':
        health = health - damage
        msg = "You lost "+ str(damage) + "HP"
        damage = damage + 1
        display()
        time.sleep(1)
        msg = ""
    #===================================================