Are you using 0.7.6 (note that it introduced a new cache)? And if so, are you using fastcache?
Aaron Meurer On Wed, Feb 25, 2015 at 10:04 AM, Paul Royik <[email protected]> wrote: > It appeared, that problem is with cache. > Clearing cache solves the problem. > > Now, I want to ask, how cache is working in multithreaded environment? > Do all people share same cache? > > > On Wednesday, February 25, 2015 at 4:11:03 PM UTC+2, Paul Royik wrote: >> >> Hello. >> >> I recently needed to make all variables in expression positive. >> >> I do this like following: >> >> f = log(x) >> a=Wild('a') >> symbols = f.free_symbols >> for symbol in symbols: >> f = f.subs(symbol, dummy) >> f = f.subs(symbol, sympy.Symbol(symbol.name, positive=True)) >> >> >> Now, when I do f.replace(log(a), log(Abs(a))) it shows log(x) as expected, >> since x is positive >> Now, make inverse process: convert positive to any >> >> for symbol in symbols: >> f = f.subs(symbol, dummy) >> f = f.subs(symbol, sympy.Symbol(symbol.name)) >> >> But f.replace(log(a), log(Abs(a))) shows log(x) and in debugger x is still >> positive. >> >> Setting f.subs(symbol, sympy.Symbol(symbol.name, positive=None)) doesn't >> help. >> Helps following: >> f.subs(symbol, sympy.Symbol(symbol.name, positive=False)) >> But I don't want negative variable. >> How can I just reset assumptions? > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/sympy. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/300957bd-6491-4a70-98b1-1fe7edde327b%40googlegroups.com. > > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAKgW%3D6JyCkPYGUBBfOP6fB7TStkm1OsC25X%2BTL%2BoJzZ117YaXA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
