Round float to x decimals in python?

Round float to x decimals in python?

You can round a float to a specific number of decimal places in Python using the round() function or string formatting. Here are both approaches:

  1. Using the round() function:

    The round() function allows you to round a float to a specified number of decimal places. Here's how to use it:

    num = 3.14159265 rounded_num = round(num, 2) # Round to 2 decimal places print(rounded_num) # Output: 3.14

    In this example, round(num, 2) rounds the num variable to two decimal places.

  2. Using string formatting:

    You can also round a float when formatting it as a string using string formatting. Here's an example using the format() method:

    num = 3.14159265 formatted_num = '{:.2f}'.format(num) # Format to 2 decimal places print(formatted_num) # Output: '3.14'

    In this example, '{:.2f}'.format(num) formats the num variable as a string with two decimal places.

Both of these methods allow you to round a float to a specific number of decimal places in Python. Choose the one that best fits your use case and formatting needs.

Examples

    value = 3.4567 rounded_value = round(value, 2) # Round to 2 decimal places print(rounded_value) 
      value = 3.4567 rounded_value = round(value, 3) # Round to 3 decimal places print(rounded_value) 
        value = 3.4567 rounded_value = round(value, 4) # Round to 4 decimal places print(rounded_value) 
          value = 3.4567 rounded_value = int(value * (10 ** 2)) / (10 ** 2) # Round to 2 decimal places without rounding print(rounded_value) 
            value = 3.4567 truncated_value = int(value * 10**2) / 10**2 # Truncate to 2 decimal places print(truncated_value) 
              value = 3.4567 rounded_value = int(value * 100) / 100.0 # Round to 2 decimal places without rounding print(rounded_value) 
                value = 3.4567 rounded_value = round(value, 2) # Round to 2 decimal places print(rounded_value) 
                  value = 3.4567 rounded_value = int(value * 100) / 100.0 # Round to 2 decimal places without rounding print(rounded_value) 
                    value = 3.4567 rounded_value = round(value, 3) # Round to 3 decimal places print(rounded_value)

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