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Solved Issue #551 regarding input validation in Connect Four #552

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Solved Issue #551 regarding input validation in Connect Four #552

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4e3616f
Solved Issue #551 regarding input validation in Connect Four
shrutidoshi94 Feb 24, 2026
83a376b
Update input prompt for column choice in game
shrutidoshi94 Feb 24, 2026
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25 changes: 22 additions & 3 deletions Connect Four/connectfour.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,17 @@
def gamePlayTwoPlayers(p1, p2):
win = ""
while win == "":
column = int(input("{}'s turn. Enter which column you would like to drop your piece into: ".format(p1)))
while True:
try:
choice = int(input("{}'s turn. Enter column (1-7): ".format(p1)))
if 1 <= choice <= 7:
column = choice - 1
break
else:
print("Invalid column! Please choose a number between 1 and 7.")
except ValueError:
print("That's not a number! Please enter a digit from 1 to 7.")

connectFourBoard(column, "X")

if check_vertical_win(p1, p2, column):
Expand All @@ -26,7 +36,16 @@ def gamePlayTwoPlayers(p1, p2):
print(check_negative_diagonal_win(p1, p2))
break

column = int(input("{}'s turn. Enter which column you would like to drop your piece into: ".format(p2)))
while True:
try:
choice = int(input("{}'s turn. Enter column (1-7): ".format(p2)))
if 1 <= choice <= 7:
column = choice - 1
break
else:
print("Invalid column! Please choose a number between 1 and 7.")
except ValueError:
print("That's not a number! Please enter a digit from 1 to 7.")
connectFourBoard(column, "O")

if check_vertical_win(p1, p2, column):
Expand Down Expand Up @@ -239,4 +258,4 @@ def main():
gamePlayTwoPlayers(player1, player2)


main()
main()