How to Convert Comma-Separated Strings to Numbers in Python?

Converting Comma-Separated Strings to Numbers in Python

As an introduction, parsing comma-separated strings into numeric values is often encountered when processing data from various sources. However, directly applying the int() or float() functions in Python may result in errors due to the mismatch between the string format and the expected numeric syntax.

Solution

To address this issue effectively, Python offers a cleaner and more intuitive approach using the locale module. This approach leverages the system's locale settings to handle comma-separated numbers seamlessly.

import locale

# Set the locale to 'en_US' (English United States)
locale.setlocale(locale.LC_ALL, 'en_US.UTF-8')

# Convert a comma-separated string to an integer
result_int = locale.atoi('1,000,000')  # Returns 1000000

# Convert a comma-separated string to a float
result_float = locale.atof('1,000,000.53')  # Returns 1000000.53

In this code, setting the locale to 'en_US' ensures that the C library functions atoi() and atof() interpret the comma-separated string correctly as numbers. The resulting integer (result_int) and float (result_float) are now available for further processing without any need for manual comma removal.

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