[a[i:i+2] for i in range(0, len(a), 2)] code example
Example: for i in range(n-1,0,-1):
# Print first 5 numbers using range function
for i in range(5):
print(i, end=', ')
# Output:
# 0, 1, 2, 3, 4,
# Print first 5 numbers using range function
for i in range(5):
print(i, end=', ')
# Output:
# 0, 1, 2, 3, 4,