All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

No unreleased change at this time.

• Add support for a Bash-like default value in variable expansion (#248 by @bbc2).

• Use current working directory to find .env when bundled by PyInstaller (#213 by @gergelyk).

• Fix escaping of quoted values written by set_key (#236 by @bbc2).
• Fix dotenv run crashing on environment variables without values (#237 by @yannham).
• Remove warning when last line is empty (#238 by @bbc2).

• Add interpolate argument to load_dotenv and dotenv_values to disable interpolation (#232 by @ulyssessouza).

• Use logging instead of warnings (#231 by @bbc2).

• Fix installation in non-UTF-8 environments (#225 by @altendky).
• Fix PyPI classifiers (#228 by @bbc2).

• Fix handling of malformed lines and lines without a value (#222 by @bbc2):
  • Don't print warning when key has no value.
  • Reject more malformed lines (e.g. "A: B", "a='b',c").
• Fix handling of lines with just a comment (#224 by @bbc2).

• Make typing optional (#179 by @techalchemy).
• Print a warning on malformed line (#211 by @bbc2).
• Support keys without a value (#220 by @ulyssessouza).

• Improve interactive mode detection (@andrewsmith)(#183).
• Refactor parser to fix parsing inconsistencies (@bbc2)(#170).
  • Interpret escapes as control characters only in double-quoted strings.
  • Interpret # as start of comment only if preceded by whitespace.

• Add type hints and expose them to users (@qnighy)(#172)
• load_dotenv and dotenv_values now accept an encoding parameter, defaults to None (@theskumar)(@earlbread)([#161])
• Fix str/unicode inconsistency in Python 2: values are always str now. (@bbc2)(#121)
• Fix Unicode error in Python 2, introduced in 0.10.0. (@bbc2)(#176)

• Fix parsing of variable without a value (@asyncee)(@bbc2)(#158)

• Add support for UTF-8 in unquoted values (@bbc2)(#148)
• Add support for trailing comments (@bbc2)(#148)
• Add backslashes support in values (@bbc2)(#148)
• Add support for newlines in values (@bbc2)(#148)
• Force environment variables to str with Python2 on Windows (@greyli)
• Drop Python 3.3 support (@greyli)
• Fix stderr/-out/-in redirection (@venthur)

• Add --version parameter to cli (@venthur)
• Enable loading from current directory (@cjauvin)
• Add 'dotenv run' command for calling arbitrary shell script with .env (@venthur)

• Add tests for docs (@Flimm)
• Make 'cli' support optional. Use pip install python-dotenv[cli]. (@theskumar)

• set_key and unset_key only modified the affected file instead of parsing and re-writing file, this causes comments and other file entact as it is.
• Add support for export prefix in the line.
• Internal refractoring (@theskumar)
• Allow load_dotenv and dotenv_values to work with StringIO()) (@alanjds)(@theskumar)(#78)

• Remove hard dependency on iPython (@theskumar)

• Add support to override system environment variable via .env. (@milonimrod) (#63)
• Disable ".env not found" warning by default (@maxkoryukov) (#57)

• Add support for special characters \. (@pjona) (#60)

• Fix issue with single quotes (@Flimm) (#52)

• Handle unicode exception in setup.py (#46)

• Fix dotenv list command (@ticosax)
• Add iPython Suport (@tillahoffmann)

• Drop support for Python 2.6
• Handle escaped charaters and newlines in quoted values. (Thanks @iameugenejo)
• Remove any spaces around unquoted key/value. (Thanks @paulochf)
• Added POSIX variable expansion. (Thanks @hugochinchilla)

• Fix find_dotenv - it now start search from the file where this function is called from.

• Add find_dotenv method that will try to find a .env file. (Thanks @isms)

• cli: Added -q/--quote option to control the behaviour of quotes around values in .env. (Thanks @hugochinchilla).
• Improved test coverage.