<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:10px"><div id="yui_3_16_0_ym19_1_1506490512558_8118">Dear all,</div><div id="yui_3_16_0_ym19_1_1506490512558_7854"><br></div><div id="yui_3_16_0_ym19_1_1506490512558_7855" dir="ltr">In the past, we had pure-Python versions of C code for users of Jython and IronPython.</div><div dir="ltr" id="yui_3_16_0_ym19_1_1506490512558_7956">For example, Bio.motifs.matrix.py uses the code in _pwm.c if available, but has a fallback implementation in pure Python if the _pwm module is not found.</div><div dir="ltr" id="yui_3_16_0_ym19_1_1506490512558_8091">Now that we require a C compiler to build Biopython from source, do we still need such pure-Python implementations?</div><div dir="ltr" id="yui_3_16_0_ym19_1_1506490512558_8147">(In particular for new code, but we can also clean up existing code if the pure-Python implementations are no longer needed).</div><div dir="ltr" id="yui_3_16_0_ym19_1_1506490512558_8164"><br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1506490512558_8160">Best,</div><div dir="ltr" id="yui_3_16_0_ym19_1_1506490512558_8161">-Michiel<br></div><div id="yui_3_16_0_ym19_1_1506490512558_7852"><br></div></div></body></html>