python iterate over an array, starting from an index code example

Example 1: iterate array python with index

for header, rows in zip(headers, columns):
    print("{}: {}".format(header, ", ".join(rows)))

Example 2: python for loop array index

colors = ["red", "green", "blue", "purple"]
i = 0
while i < len(colors):
    print(colors[i])
    i += 1