Rock-Paper-Scissors in Python

#Rock Paper Scissors
import random
#1 corresponds to Rock, 2 corresponds to Paper, 3 corresponds to Scissors.
choices=[1,2,3]
player_pt=0
bot_pt=0
player_choice=0
bot_choice=0
#Function for initiating bot_choice and getting player_choice.
def initialize():
    global bot_choice
    bot_choice=random.choice(choices)
    print "\n1.Rock\n2.Paper\n3.Scissors"
    global player_choice
    player_choice=int(raw_input("Enter the number of your choice:"))
    while player_choice not in range(1,4):
        player_choice=raw_input("\nInvalid input!\nEnter the number alone.\n1.Rock\n2.Paper\n3.Scissors\nEnter your choice again:")

#Function for evaluation.
def evaluate():
    global player_pt
    global bot_pt
    if player_choice==bot_choice:
        print "\nThat was a tie!\nLets try again! Bet I'll win this time!"
    elif player_choice==1 and bot_choice==2:
        bot_pt+=1
        print "\nI beat you this time!I chose Paper!"
        print player_name,":",player_pt,"\nBot:",bot_pt
    elif player_choice==1 and bot_choice==3:
        player_pt+=1
        print "\nYou got lucky!You won this time!I chose Scissors!"
        print player_name,":",player_pt,"\nBot:",bot_pt
    elif player_choice==2 and bot_choice==1:
        player_pt+=1
        print "\nYou got lucky!You won this time!I chose Rock!"
        print player_name,":",player_pt,"\nBot:",bot_pt
    elif player_choice==2 and bot_choice==3:
        bot_pt+=1
        print "\nI beat you this time!I chose Scissors!"
        print player_name,":",player_pt,"\nBot:",bot_pt
    elif player_choice==3 and bot_choice==1:
        bot_pt+=1
        print "\nI beat you this time!I chose Rock!"
        print player_name,":",player_pt,"\nBot:",bot_pt
    elif player_choice==3 and bot_choice==2:
        player_pt+=1
        print "\nYou got lucky!You won this time!I chose Paper!"
        print player_name,":",player_pt,"\nBot:",bot_pt

print "Hi there! I'm Rock-Paper-Scissors bot!"
player_name=raw_input("What's your name?")
print "Ready to play with me",player_name,"?! One who scores 10 points first wins!!"
while player_pt<10 and bot_pt<10:
    initialize()
    evaluate()
if player_pt==10:
    print "\nKudos",player_name,"! You won!"
elif bot_pt==10:
    print "\nI won!Better luck next time",player_name,"!"
raw_input()