I need some help to decifer the following command
[u.operator()(*map(lambda v:v.log().log_expand(), u.operands())) for u in Sys0]
The problem is not the following part (*map(lambda v:v.log().log_expand(), u.operands())) I know that * unpack the
u.operands() and I know lambda functions. But I find nothing in the docs on operator (there is a documentation on operators but I find nothing on operator). Then what troubles me is the syntax u.operator()().
By advance thanks for the explanation.
