Question

Chapter 6: Use a list to store the players

In Python, Update the program so that it allows you to store the players for the starting lineup. This

should include the player’s name, position, at bats, and hits. In addition, the program

should calculate the player’s batting average from at bats and hits.

Console

================================================================

Baseball Team Manager

MENU OPTIONS

1 – Display lineup

2 – Add player

3 – Remove player

4 – Move player

5 – Edit player position

6 – Edit player stats

7 - Exit program

POSITIONS

C, 1B, 2B, 3B, SS, LF, CF, RF, P

================================================================

Menu option: 2

Name: Mike

Position: C

At bats: 0

Hits: 0

Mike was added.

Menu option: 1

Player POS AB H AVG

----------------------------------------------------------------

1 Joe P 10 2 0.2

2 Tom SS 11 4 0.364

3 Ben 3B 0 0 0.0

4 Mike C 0 0 0.0

Menu option: 6

Lineup number: 4

You selected Mike AB=0 H=0

At bats: 4

Hits: 1

Mike was updated.

Menu option: 4

Current lineup number: 4

Mike was selected.

New lineup number: 1

Mike was moved.

Menu option: 7

Bye!

Specifications

 Use a list of lists to store each player in the lineup.

 Use a tuple to store all valid positions (C, 1B, 2B, etc).

 Make sure that the user’s position entries are valid.

Answer 1

'''
Python version : 2.7
Python program to create a baseball management system
'''

      
players=[['Joe','P',10,2,0.2],['Tom','SS',11,4,0.364],['Ben','3B',0,0,0.0]] # creating an list of lists with few playes information
position=('C','1B','2B','3B','SS','LF','CF','RF','P') # creating a tuple for storing valid positions
choice=0 # choice variable for taking user's menu choice
lineup=1 # lineup to take the lineup number from user
numOfPlayers=3 # to keep hold on the number of players

print("="*64)
print("\t\tBaseball Team Manager")
print("MENU OPTIONS") # display the menu
print("1-Display lineup")
print("2-Add player")
print("3-Remove Player")
print("4-Move player")
print("5-Edit player position")
print("6-Edit player stats")
print("7-Exit program")
# display the positions
print("\nPOSITIONS:")

for i in range(len(position)):
   if i < len(position)-1:
       print(position[i]+","),
   else:
       print(position[i])
  
print("="*64)
while choice!=7: # loop till the choice of user is not equal to 7      
   try:
       choice=int(raw_input("\nMenu Option:")) # take user's menu option in variable choice
       if choice==1: # if choice is 1
           lineup=1
           print("Player POS AB H AVG")
           print("-"*30)
           for player in players: # loop through the list and display each players' information
               print(str(lineup)),
               for item in player:
                   print(str(item)+" "),
               lineup=lineup+1
               print("")
              
       elif choice==2: # if the user's choice is 2
           name=raw_input("Name: ") # take name and position from user
           pos=raw_input("Position: ")
          
           while pos not in position: # if user is provided valid position
               print("Incorrect position")
               pos=raw_input("Position:")
           AB=int(raw_input("At bats: ")) # take at bats and hits value from user
           hit=int(raw_input("Hits: "))      
           if AB!=0: # if at bats is not 0, set avg as hits / at bats
               avg=float(hit)/float(AB) # else set avg as 0
           else:
               avg=0
           NewPlayer=[name,pos,AB,hit,avg] # create a list as newPlayer, and update the list with new info
           players.append(NewPlayer) # append the list newplayer to players list
           numOfPlayers=numOfPlayers+1 # increment number of players by 1
           print(name+' was added')
      
       elif choice==3: # if choice is 3
           lineup=int(raw_input("Lineup number:")) # take lineup number from user
           while lineup>numOfPlayers: # if lineup number is greater than number of player
               print("Please enter the correct lineup number:") # then show appropriate info and again ask for lineup number
               lineup=int(raw_input("Lineup number:")) # display the player's information with specified lineup
           print("You selected " + str(players[lineup-1][0]) + " "+ str(players[lineup-1][1]) +" "+ str(players[lineup-1][2]) +" "+ str(players[lineup-1][3]) +" "+ str(players[lineup-1][4]))
           del players[lineup-1] # delete the player with specified lineup
           numOfPlayers=numOfPlayers-1 # decrement num of players by 1
           print("The player with lineup number " + str(lineup) + " has been removed")
      
       elif choice==4: # if choice is 4
           current_lineup=int(raw_input("Current lineup number:")) # take current lineup from user and print the player's info
          
           while current_lineup <1 or current_lineup>numOfPlayers: # show appropriate message and again ask for lineup if incorrect
               print("Please enter the correct lineup number:") # lineup is provided
               current_lineup=int(raw_input("Current lineup number:"))
           print("You selected " + str(players[current_lineup-1][0]))
          
           new_lineup=int(raw_input("New lineup number:")) # take new lineup from user
           while new_lineup <1 or new_lineup>numOfPlayers: # show appropriate message and again ask for lineup if incorrect
               print("Please enter the correct lineup number:") # lineup is provided
               new_lineup=int(raw_input("New lineup number:"))
              
           (players[current_lineup-1], players[new_lineup-1]) = (players[new_lineup-1], players[current_lineup-1] )
           print(str(players[new_lineup-1][0]) + " was moved")
          

       elif choice==5: # if choice is 5
           lineup=int(raw_input("Lineup number:")) # take line up from user
           while lineup <1 or lineup>numOfPlayers: # show appropriate message and again ask for lineup if incorrect
               print("Please enter the correct lineup number:") # lineup is provided
               lineup=int(raw_input("Lineup number:"))
           print("You selected " + str(players[lineup-1][0]) + " Pos=" + str(players[lineup-1][1])) # show player's information
          
           pos=raw_input("Position:") # Ask the position to change
          
           while pos not in position: # get appropriate position, if incorrect position is specified
               print("Incorrect position")
               pos=raw_input("Position:")
           players[lineup-1][1]=pos # update the player's information with new position
           print(str(players[lineup-1][0]) + " updated")
              
       elif choice==6: # if choice is 6
           lineup=int(raw_input("Lineup number:")) # take correct lineup number from user
           while lineup>numOfPlayers:
               print("Please enter the correct lineup number:")
               lineup=int(raw_input("Lineup number:"))
              
           print("You selected " + str(players[lineup-1][0]) + " AB=" + str(players[lineup-1][2]) + " hits=" + str(players[lineup-1][3]))
           AB=int(raw_input("At bats:")) # take the value of at bats and hits from user
           hit=int(raw_input("Hits:"))
           players[lineup-1][2]=AB # update the player's information with new at bats and hots
           players[lineup-1][3]=hit
           if AB==0: # also calculate average and update
               players[lineup-1][4]=0
           else:
               players[lineup-1][4]=float(hit)/float(AB)
           print(str(players[lineup-1][0]) + " updated")
          
       elif choice==7: # if choice is 7, print break and come out of the loop
           print("Bye!")
          
   except ValueError:
       print('Not a valid option. Please try again')
       print("\nMENU OPTIONS") # display the menu
       print("1-Display lineup")
       print("2-Add player")
       print("3-Remove Player")
       print("4-Move player")
       print("5-Edit player position")
       print("6-Edit player stats")
       print("7-Exit program")
      
#end of program      
  
Code Screenshot:

Output: