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POSymPy - Arbitrary number of Symbols
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copied!<p>I am coding a function that solves an arbitrary number of simultaneous equations. The number of equations is set by one of the parameters of the function and each equation is built from a number of symbols - as many symbols as there are equations. This means that I can't simply hardcode the equations, or even the symbols needed to put together the equations; the function needs to be able to handle any number of equations. So, my question is, how do I produce a list of symbols?</p> <p>I have one possible solution, but my gut tells me that it's not going to be very efficient. Please let me know if there is a better way of doing this. </p> <p>I'm new to SymPy and am still feeling my way about. As far as I can see, Symbols need to be defined with a string. Therefore, I can produce a series strings via appending an incrementing number to a letter (say 't0', 't1', etc), add them to a list and then create the symbols using those strings as parameters. Those symbols would themselves be stored in a list and would be used to produce the equations. </p> <pre><code>def solveEquations(numEquations): symbolNameList = [] symbolList = [] equationList = [] for i in range(numEquations): name = 't' + str(i) symbolNameList.append(name) symbolList.append(Symbol(name)) for i in range(numEquations): equation = 0 for sym in symbolList: equation += sym ** i # Or whatever structure the equation needs equationList.append(equation) #Then go on to solve the equations... </code></pre> <p>Is this the best way of doing this, or is there a more efficient approach?</p>

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