Learn how to read a properties file in Python using configparser, jproperties, and manual parsing. Includes code examples and a method comparison table.

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Four methods for reading Java-style .properties files in Python are covered: configparser (stdlib, requires section header workaround), jproperties (third-party, native Java .properties support with write-back), manual parsing with open() (zero dependencies, full control), and python-dotenv (for .env-style files only). Each method is demonstrated with code examples using a shared sample file. Edge cases covered include Unicode escape sequences, multiline continuation values, duplicate keys, and large file streaming. A comparison table summarizes trade-offs across all four approaches.

How to Read a Properties File in Python

Method 1: Read a Properties File Using configparser

Method 2: Read a Properties File Using jproperties

Method 3: Manual Parsing with Plain Python

Method 4: Using python-dotenv for .env-Style Properties Files

.properties Files vs. Other Configuration Formats