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# Remove {2} to solve the indexError
greeting = "Hello, {0}! Today is {1}. {2}"

formatted_greeting = greeting.format("CodeFriend", "Tuesday")

print(formatted_greeting)

# Tips for Using `format()` Function - indexError

When using the `format()` function, if the number of curly braces `{}` in the string does not match the number of arguments passed to the `format()` function, an **indexError** exception will occur.

An `indexError` happens when there are more curly braces in the string than there are parameters passed to the function, resulting in a failure to find a value to map to a brace.

<br />

```python title="indexError Example"
greeting = "Hello, {0}! Today is {1}. {2}"

try:
    formatted_greeting = greeting.format("CodeFriend", "Tuesday")
    print(formatted_greeting)

except IndexError as e:
    print(f"Error occurred: {e}")
```

<br />

## Resolving indexError

To prevent `indexError`, ensure the number of curly braces in the string matches the number of parameters passed to the format() function.

```python title="Resolved indexError"
# Remove {2} to resolve the indexError
greeting = "Hello, {0}! Today is {1}."
formatted_greeting = greeting.format("Chris", "Tuesday")

print(formatted_greeting)  # "Hello, Chris! Today is Tuesday."
```

The format() function maps arguments to the curly braces in the string. If there aren't enough arguments to map, an IndexError occurs. Therefore, you should ensure the number of curly braces matches the number of arguments.

An IndexError exception occurs if the number of curly braces in the string and the number of arguments passed to the format() function do not match.

Tips for Using format() Function - indexError

Resolving indexError

Tips for Using `format()` Function - indexError