Hello Jalil, Did you try to search the mailing list archives at https://mail.python.org/archives/list/kwant-discuss@python.org/ ?
A quick search for "units" reveals several relevant messages, like https://mail.python.org/archives/list/kwant-discuss@python.org/message/SFAIAPJVKE4ZVBIEYRLSJDGW4V42L5YG/ https://mail.python.org/archives/list/kwant-discuss@python.org/message/QFUYXIS4TDNEFO3URAVMDDCASLAMIWOS/ Do these answer your question? Cheers Christoph
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