Python D&D test | Python Fiddle

import random
import math
import os
#the begining
def start():
    Q1 = (input("press Y or N and enter for the respected answer "))
    if Q1 == ("Y") or Q1 == ("y"):
        str(data_test())
    elif Q1 == ("N") or Q1 == ("n"):
        print ("termanating...")
    else:
        print ("invalid input")
        str(start())
#test for task two data
def data_test():
    global name1
    global name2
    global ski1
    global str1
    global ski2
    global str2
    name1 = ("player 1")
    name2 = ("player 2")
    ski1 = 10
    str1 = 10
    ski2 = 10
    str2 = 10
    ski_mod = 0
    str_mod = 0
    if os.path.exists('D&D A.txt') == True:
        print ("Their is saved data already in this file do you want to use this data?")
        Q2 = (input("press Y or N and enter for the respected answer "))
        if Q2 == ("Y") or Q2 == ("y"):
            print ("Loading data...")
            str(load_player_data())
        elif Q2 == ("N") or Q2 == ("n"):
            print("ok Proceeding to manually entering player data")
            str(set_player_name())
        else:
            print("Invalided input")
            str(data_test())
    else:
        print ("No saved data detected proceeding to manually inputting player data")
        str(set_player_name())
#loads task two data
def load_player_data():
    #fill me in later
    print("this fecher is currently unavalable")
    str(set_player_name())
#incase task two data is now found
def set_player_name():
    global name1
    global name2
    print ("lets give names to our caricters")
    print ("ok now give a name to caricter one")
    name1 = (input("input name of caricter one "))
    print ("good now lets give the second caricter a name")
    name2 = (input("input name of caricter two "))
    print("")
    print ("now both caricters have names lets give them attributes")
    print ("how we do this is")
    print ("Each attribute is initially set to 10")
    print ("then we roll two dice")
    print ("The score on the 12 sided dice is divided by ")
    print ("the score on the 4 sided dice and rounded down.")
    print ("then we repeat the proces for each caricters attributes")
    str(set_player_1_ski())
#dose what the name sais and sets player 1 skill
def set_player_1_ski():
    global ski1
    global name1
    Q3 = input((name1)+(" press r to roll the 12 and 4 sided dice to determen your 'SKILL' "))
    if Q3 == ("r") or Q3 == ("R"):
        roll12 = random.randint(1,12)
        roll4 = random.randint (1,4)
        print ("the 12 sided rolled:")
        print (roll12)
        print ("and the 4 sided rolled:")
        print (roll4)
        print ("good thet makes your 'SKILL':")
        ski1 = math.floor(((roll12)/(roll4))+(ski1))
        print (ski1)
        str(set_player_1_str())
    else:
        print ("invalid input")
        str(set_player_1_ski())
#dos this neede a comment if so: sets player 1 strength
def set_player_1_str():
    global name1
    global str1
    global ski1
    Q4 = input ((name1)+(" press 'r' agen to roll the dice to determan your 'STRENGHT'"))
    if Q4 == ("r") or Q3 == ("R"):
        roll12 = random.randint(1,12)
        roll4 = random.randint (1,4)
        print ("the 12 sided rolled:")
        print (roll12)
        print ("and the 4 sided rolled:")
        print (roll4)
        str1 = math.floor(((roll12)/(roll4))+(str1))
        print ("now your 'STRENGTH' is:")
        print (str1)
        print ("good "+ str(name1) + " and your 'SKILL' is " +  str(ski1))
        str(set_player_2_ski())
    else:
        print ("invalid input")
        str(set_player_1_str())
#sets player 2 skill
def set_player_2_ski():
    print("")
    global name2
    global ski2
    print ((name2)+(" now its your tern to roll the dice"))
    Q5 = input(" press 'r' to roll the dice to determan your 'SKILL'")
    if Q5 == ("r") or Q2 == ("R"):
        roll12 = random.randint(1,12)
        roll4 = random.randint (1,4)
        print ("the 12 sided rolled:")
        print (roll12)
        print ("and the 4 sided rolled:")
        print (roll4)
        print ("good thet makes your 'SKILL':")
        ski2 = math.floor(((roll12)/(roll4))+(ski2))
        print (ski2)
        print ("press r agen to roll for your'STRENGTH'")
        str(set_player_2_str())
    else:
        print ("invalid input")
        str(set_player_2_ski())
#sets player 2 strentgh
def set_player_2_str():
    print("")
    global name2
    global str2
    roll12 = random.randint(1,12)
    roll4 = random.randint (1,4)
    Q5 = input("press 'r' agen to roll the dice to determan your 'STRENGHT'")
    if Q5 == ("r") or Q3 == ("R"):
        print ("the 12 sided rolled:")
        print (roll12)
        print ("and the 4 sided rolled:")
        print (roll4)
        str2 = math.floor(((roll12)/(roll4))+(str2))
        print ("now your 'STRENGTH' is:")
        print (str2)
        print ("good "+ str(name2) + " and your 'SKILL' is " +  str(ski2))
        print ("now that the atrabuts have been set do you whant to do, move on to the modifirers or reroll them")
        str(player_RR_or_MO())
    else:
        print ("invalid input")
        str(set_player_2_str())
#asks the player if thay whant to reroll ther atrabuts
def player_RR_or_MO():
    Q6 = input("to set the modifires press 'm' or to reroll the atrabutes press 'r' ")
    if Q6 == ("m") or Q6 == ("M"):
        print("moving on to modifiers...")
        str(set_mod_ski())
    elif Q6 == ("r") or Q6 == ("R"):
        print("reseting...")
        str(set_player_1_ski())
    else:
        print ("invalid input")
        str(player_RR_or_MO())
#sets the skill modifier
def set_mod_ski():
    global name1
    global name2
    global ski1
    global str1
    global ski2
    global str2
    global ski_mod
    print("calculating modifires...")
    if ski1 > ski2:
        ski_mod = ski1 - ski2
    elif ski2 > ski1:
        ski_mod = ski2 - ski1
    str(set_mod_srt())
#sets the strength
def set_mod_srt():
    global name1
    global name2
    global ski1
    global str1
    global ski2
    global str2
    global ski_mod
    global str_mod
    if str1 > str2:
        str_mod = str1 - str2
    elif str2 > str1:
        str_mod = str2 - str1
    print("calculation compleat")
    print("the results are:")
    print("strength modifirer:")
    print(ski_mod)
    print("skill modifirer:")
    print(str_mod)
    str(battel_start())
#start the battel off
def battel_start():
    print ("to win the battel you need to decreas your oponents atrabutes to '0' and to do so")
    print("you need to roll a dice for each player and wichever player has the lowest score")
    print("has thair atrabutes decreased by the modifirersand this proces continues untill thair is awinner")
    str(battel_main())
#tells the player what evrythink is
def battel_main():
    global name1
    global name2
    global ski1
    global str1
    global ski2
    global str2
    global ski_mod
    global str_mod
    print(str(name1)+" your skill is: ")
    print(str(ski1))
    print("and your stregth is: ")
    print(str1)
    print(str(name2)+" your skill is: ")
    print(str(ski2))
    print("and your strength is: ")
    print(str2)
    print("and the modifires are: ")
    print("skill mod: "+str(ski_mod))
    print("strength mod: "+str(str_mod))
    str(battel_test())
#test if the player has whon
def battel_test():
    global ski1
    global str1
    global ski2
    global str2
    if ski1 < 0 and str1 < 0:
        str(battel_p2_win())
    elif ski2 < 0 and str2 < 0:
        str(battel_p1_win())
    else:
        str(battel_attack())
#resets the modifires
def battel_reset_mods():
    global ski1
    global str1
    global ski2
    global str2
    global ski_mod
    global str_mod
    if str1 > str2:
        str_mod = str1 - str2
    elif str2 > str1:
        str_mod = str2 - str1
    if ski1 > ski2:
        ski_mod = ski1 - ski2
    elif ski2 > ski1:
        ski_mod = ski2 - ski1
    str(battel_main())
#makes the players attack
def battel_attack():
    global name1
    global name2
    global ski1
    global str1
    global ski2
    global str2
    global ski_mod
    global str_mod
    print("")
    print(str(name1)+", "+ str(name2)+" press 'R' to roll your attack")
    Q7 = input("please input your answer ")
    if Q7 == ("r")or Q7 ("R"):
        p1_atk_roll = random.randint(1,6)
        p2_atk_roll = random.randint(1,6)
        print(str(name1) + " rolled: " + str(p1_atk_roll))
        print(str(name2) + " rolled: " + str(p2_atk_roll))
    else:
        str(battel_attack())
    if p1_atk_roll < p2_atk_roll:
        print(str(name1)+" was hit")
        str(battel_p1_hit())
    elif p2_atk_roll < p1_atk_roll:
        print(str(name2)+" was hit")
        str(battel_p2_hit())
    else:
        print("the roll was a draw please reroll")
        str(battel_attack())
#when player 1 is hit
def battel_p1_hit():
    global ski1
    global str1
    global ski2
    global str2
    global ski_mod
    global str_mod
    ski1 = ski1 - ski_mod
    str1 = str1 - str_mod
    print("")
    str(battel_reset_mods())
#when player two is hit
def battel_p2_hit():
    global ski1
    global str1
    global ski2
    global str2
    global ski_mod
    global str_mod
    ski2 = ski2 - ski_mod
    str2 = str2 - str_mod
    print("")
    str(battel_reset_mods())
#when plyer 1 wins
def battel_p1_win():
    global name1
    global name2
    print("congratulations " + str(name1) + " you have win")
    str(play_again())
#when player 2 win
def battel_p2_win():
    global name1
    global name2
    print("congratulations " + str(name2) + " you have win")
    str(play_again())
#it playes again
def play_again():
    print ("do you want to play again?")
    str(start())
#the begining at the end
print("welcom are you ready to play dungeon and dragons?")
str(start())

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