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POHow do I access the name of a given variable in python?
 

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  1. POHow do I access the name of a given variable in python?
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    <p>I am programming in python and need to access the name I have given to an object so as to be able to pass this as a string (concatenated with another string). </p> <p>The reason I need to do this is that the program I am using forces me to create a global (which in my case is a dictionary) and I am writing a function to work in general with several different objects (which each have similar sets of properties, eg. object 1 is of length 2 (signifying in my case 2 neurons) labelled 0 and 1 and each of these has 4 properties a,b,c,d. I want to create a "dictionary filetree" of these properties but both object1 and object 2 are 2 instances of the same class, therefore I need to change the first level keys to being 'NAME1_0, 'NAME1_1', 'NAME2_0', 'NAME2_1').</p> <pre><code>def Init(neuron,input): #Initialises the neuron group, arguements are neuron (neurongroup) and input (neurongroup) global dict dict={} for x in range(0,len(neuron)): neuron[x].L=0 neuron[x].G=0 neuron[x].ron=1/period neuron[x].roff=1/period dict[x]={'tau_on':0.5, 'Non_off':neuron[x].roff*0.5, 'Non_off':neuron[x].ron*0.5, 'Ni_on':ones(len(input))*qon*0.5, 'Ni':ones(len(input))*qoff*0.5+ones(len(input))*qon*0.5, 'p_current':0, 'p_previous':0, 'my_tau_on':[], 'my_Non_off':[], 'my_Noff_on':[], 'my_Ni_on':[], 'my_Ni':[], 'my_p_on':[], 'my_ron':[], 'my_roff':[], 'my_theta':[], 'my_weights':[], 'my_record_times':[]} dict['%s' % x, neuron]=dict.pop(x) </code></pre> <p>does not work as it does not give the name assigned to the object but merely the name of the object itself. for a more minimal case of my problem</p> <pre><code>NAME1=4 def func(x): #creates string of 'NAME1' print 'x' func(NAME1) #output='NAME1' </code></pre>
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    1. USkapa
    1. USMike H-R
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      1. POHow do I access the name of a given variable in python?
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    1. CO"There must be a better way". Bear in mind that in `func(NAME1)` the expression `NAME1` is *evaluated* first and then *resulting value* is passed to the `func` function where it is assigned to the `x` parameter.
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    2. COdict is a keyword. When you use it as a name it overrides the properties of the dict object
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      1. POHow do I access the name of a given variable in python?
      1. USjoel goldstick
    3. COIs there a reason you can't just add a `.name` attribute to the Neuron class? BTW, Pythonistas frown upon this `range(len(...))` construct; just iterate over the sequence directly. If you really, really need indices (you almost always don't), that's what `enumerate` is for.
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      1. POHow do I access the name of a given variable in python?
      1. USKarl Knechtel
 

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