Finally, I solved my problem. The problem was that my program was dependent from the order that some input files were read. This caused a lot of side effects.
Of course you suggestion about the sympy( github.com/sympy/sympy) helped me a lot to find my issue. Thanks a lot! Have a nice day. > -- You received this message because you are subscribed to the Google Groups "sympy" group. To view this discussion on the web visit https://groups.google.com/d/msg/sympy/-/LvWGris0aPsJ. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
