TIL: enumerate() Has a start Parameter You Probably Never Used

When working with lists in Python, enumerate() is a handy function that allows us to loop over both the index and value of each item. By default, enumerate() starts counting from 0, which is usually what we want. However, there are cases where we might want to start counting from a different number, like 1.

Let's take a look at an example:

fruits = ['apple', 'banana', 'cherry']
for i, fruit in enumerate(fruits): 
    print(f"Fruit {i}: {fruit}")
# Output:
# Fruit 0: apple
# Fruit 1: banana
# Fruit 2: cherry

for i, fruit in enumerate(fruits, start=1): 
    print(f"Fruit {i}: {fruit}")
# Output:
# Fruit 1: apple
# Fruit 2: banana
# Fruit 3: cherry

As you can see, by passing start=1 to enumerate(), we can start counting from 1 instead of the default 0. This can be useful when working with data that's 1-indexed, like human-readable lists or CSV files.

Takeaway: The start parameter of enumerate() is a hidden gem that can simplify your code when working with 1-indexed data, so keep it in mind for your next Python project!

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