In Python 3.10, the until keyword is used in conjunction with the while keyword to create a loop that continues until a certain condition is met. Here's the syntax:
while not condition:
# block of code to be executed repeatedly
# until the 'condition' evaluates to 'True'
pass
else:
# block of code to be executed after the loop
# has completed without a 'break' statement
pass
Here's an example to demonstrate the usage of until keyword in a while loop:
# using until with while loop
n = 0
while not (n == 5):
print(n)
n += 1
else:
print("Loop is completed without a 'break' statement")
print("End of program")
Output:
0
1
2
3
4
Loop is completed without a 'break' statement
End of program
In this example, the while loop iterates until n becomes 5. The until keyword is used to negate the condition, which means that the loop will continue executing until the condition becomes True. The else block is executed after the loop completes without encountering a break statement.