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Given the following text description, write Python code to implement the functionality described below step by step
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Description:
 Let's determine the current through R1.  There are many ways to solve this; the easiest is to combine the sources, combine the resistances, and then use Ohm's law. The result is a function of $V_x$
Step1:  Now given the current, we can use Ohm's law to determine the voltage drop across R1.
Step2:  Thus we know that $V_x = 3 V_x + 2$ or $V_x = -1$.  Of course, Lcapy can determine this directly. Here Ox is the name of the open circuit over which we wish to determine the voltage difference
Step3:  Alternatively, we can query Lcapy for the voltage at node 'x' with respect to ground.  This gives the same result.
Step4:  Let's check the current with Lcapy
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Python Code:
Vx = V('V_x').Voc
I = (cct.V1.V - 4 * Vx) / (cct.R1.Z + cct.R2.Z)
Explanation: Let's determine the current through R1.  There are many ways to solve this; the easiest is to combine the sources, combine the resistances, and then use Ohm's law. The result is a function of $V_x$:
End of explanation
I * cct.R1.Z
cct.V1.V - I * cct.R1.Z
Explanation: Now given the current, we can use Ohm's law to determine the voltage drop across R1.
End of explanation
cct.Ox.V
Explanation: Thus we know that $V_x = 3 V_x + 2$ or $V_x = -1$.  Of course, Lcapy can determine this directly. Here Ox is the name of the open circuit over which we wish to determine the voltage difference:
End of explanation
cct['x'].V
Explanation: Alternatively, we can query Lcapy for the voltage at node 'x' with respect to ground.  This gives the same result.
End of explanation
cct.R1.I
Explanation: Let's check the current with Lcapy:
End of explanation
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