Truncate to three decimals in Python

Truncate to three decimals in Python

To truncate a floating-point number to three decimal places in Python, you can use the round() function. Here's how you can do it:

# Original floating-point number original_number = 12.3456789 # Truncate to three decimal places truncated_number = round(original_number, 3) print(truncated_number)

In this example, we start with the original floating-point number 12.3456789, and then we use the round() function to round it to three decimal places. The result, 12.346, is the number truncated to three decimal places.

You can replace original_number with any other floating-point number you want to truncate to three decimal places.

Examples

  1. How to truncate a float to three decimal places in Python?

    • Use mathematical operations to truncate a float to three decimal places by multiplying, converting to integer, and then dividing.
    number = 123.456789 truncated_number = int(number * 1000) / 1000 # Truncate to three decimals

  2. Python: Truncate to three decimal places without rounding

    • To ensure no rounding occurs, you can use floor division to maintain the exact truncation.
    import math number = 123.456789 truncated_number = math.floor(number * 1000) / 1000 # Truncate without rounding

  3. How to format a float to three decimal places in Python?

    • Use string formatting to ensure the number has three decimal places. This approach maintains a consistent output.
    number = 123.456789 formatted_number = "{:.3f}".format(number) # Format to three decimals

  4. Python: Round a float to three decimal places

    • The round() function can round a float to a specific number of decimal places.
    number = 123.456789 rounded_number = round(number, 3) # Round to three decimals

  5. How to display a float with three decimal places in Python?

    • This example uses f-strings to ensure a float is displayed with three decimal places, which can be useful for printing or output.
    number = 123.456789 print(f"{number:.3f}") # Display with three decimals

  6. Python: Convert float to string with three decimal places

    • You can convert a float to a string representation with three decimal places using string formatting.
    number = 123.456789 str_number = f"{number:.3f}" # Convert to string with three decimals

  7. How to get the first three decimals of a float in Python?

    • To extract the first three decimal digits without rounding, you can convert the float to a string and manipulate it.
    number = 123.456789 str_number = str(number) first_three_decimals = str_number.split(".")[1][:3] # Get first three decimals

  8. Python: Convert to float with a specific number of decimals

    • This example demonstrates converting a float to a desired number of decimals by truncating and then converting back to float.
    number = 123.456789 truncated_float = float(f"{number:.3f}") # Convert to float with three decimals

  9. Truncate a float to three decimal places using decimal module in Python

    • Use the decimal module to precisely manage decimal places, ensuring exact truncation.
    from decimal import Decimal, ROUND_FLOOR number = Decimal("123.456789") truncated_number = number.quantize(Decimal("0.001"), rounding=ROUND_FLOOR) # Truncate to three decimals

  10. Python: Ensure consistent decimal places in a float

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