How Can I Format Floats to Two Decimal Places in Python?

Formatting Floats with Two Decimal Places

When working with floating-point values in Python, it may be necessary to format them with a specific number of decimal places. In this case, the goal is to display floats with exactly two decimal places.

To achieve this, Python provides several methods:

1. Using the format() Function:

The format() function can be used with floating-point values to specify the desired formatting. The syntax is:

"{:.2f}".format(float_value)

where 2 is the number of decimal places. For example:

float_value = 5
formatted_value = "{:.2f}".format(float_value)
print(formatted_value)  # Output: 5.00

2. Using the round() Function and String Formatting:

Alternatively, you can use the round() function to round the float to two decimal places and then convert it to a string using string formatting.

float_value = 5.5
rounded_value = round(float_value, 2)  # Rounds to 5.50
formatted_value = f"{rounded_value:.2f}"
print(formatted_value)  # Output: 5.50

Both methods achieve the same result, providing a string representation of the float with two decimal places. The format() function is more concise, while the round() approach allows for more flexibility in rounding behavior and potentially more complex formatting options.

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