Error : No module named Sympy

Question

basically I have to simplify in Cadabra $\frac{1}{k.pk.(p+q) }+\frac{1}{k.qk.(p+q) }$ which is equal to $\frac{1}{k.p~~k.q }$

What I tried is

{c,f}::Indices;
m:=1/((p_{c}+q_{c})k_{c}*(q_{f})k_{f});
n:=1/((p_{c}+q_{c})k_{c}*(p_{f})k_{f});
w:= @(m) + @(n);
distribute(_);
substitute(_, $k_{c} p_{c} = kp, k_{c} q_{c} = kq$, repeat=True);
map_sympy(_, "together");

But it is showing an import error : No module named Sympy. What should i do to rectify the same

Answer 1

You need to install the python 'sympy' module. On which system/distribution are you running this?

Comments

debian jessie 8.9.. ihave installed the module sympy in my system

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Cadabra uses python 3, are you sure you have installed it for that python version? When you launch python3, can you import sympy there?

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Thanks..Now its working