py7zr is a library and utility to support 7zip archive compression, decompression, encryption and decryption written by Python programming language. py7zr supports algorithms and filters which lzma module and liblzma support, and supports BZip2 and Deflate that are implemented in python core libraries, It also supports ZStandard, Brotli and PPMd with third party libraries. py7zr is also able to encrypt and decrypt data using 3rd party encryption library. Supported algorithms compress LZMA2 LZMA Bzip2 Deflate Copy ZStandard Brotli PPMd Enhanced Deflate (Experimental) (not on SBo) crypt 7zAES Filters Delta BCJ(X86,ARMT,ARM,PPC,SPARC,IA64)