cmblensplus: A tool to analyze cosmic microwave background anisotropies

cmblensplus (https://toshiyan.github.io/clpdoc/html/) is a public code to reconstruct lensing potential, cosmic bi-refringence, patchy reionization, and other distortion fields from cosmic microwave background anisotropies (CMB) in the full and flat sky. This wrapper for Python also includes modules for delensing and bi-spectrum calculations. The cmblensplus software contains a module of basic routines such as analytic calculation of delensed B-mode spectrum and lensing bispectrum. Two additional modules are for the curved sky and flat sky analyses, and measure lensing, bi-refringence, patchy tau, bias-hardening, bi-spectrum, delensing, and analytic reconstruction normalization. The package also contains simple Python utility and demonstration scripts. cmblensplus uses FFTW (ascl:1201.015), HEALPix (ascl:1107.018), LAPACK (ascl:2104.020), CFITSIO (ascl:1010.001), and LensPix (ascl:1102.025).