First for loop stops after first iteration

[Divanova94]

30X20 would be 600 elements and you have 3200 (160x20). When you are reshaping, the total number of elements can’t be altered. That is why it works with break - f1 has 30 sub-lists and with brake it takes first element of each so you get 30x20 array to reshape

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with the simplified example would you share what desired output would be and how it is achieved

f1 = [['N1M2', 'N1M3', 'N1M4', 'N1M5']]

f2 = ['M1N2','M1N3','M1N4','M1N5','M2N3','M2N4','M2N5','M3N4','M3N5','M4N5','N1M2','N1M3','N1M4','N1M5','N2M3','N2M4','N2M5','N3M4','N3M5','N4M5']
new = []
def get(f1, f2):
    for j in f1:
        for x in j:
            for i in f2:
                if i == x:
                    new.append('%s*1' % i)
                else:
                    new.append('%s*0' % i)
    return new

Output:
['M1N2*0', 'M1N3*0', 'M1N4*0', 'M1N5*0', 'M2N3*0', 'M2N4*0', 'M2N5*0', 'M3N4*0', 'M3N5*0', 'M4N5*0', 'N1M2*1', 'N1M3*0', 'N1M4*0', 'N1M5*0', 'N2M3*0', 'N2M4*0', 'N2M5*0', 'N3M4*0', 'N3M5*0', 'N4M5*0', 'M1N2*0', 'M1N3*0', 'M1N4*0', 'M1N5*0', 'M2N3*0', 'M2N4*0', 'M2N5*0', 'M3N4*0', 'M3N5*0', 'M4N5*0', 'N1M2*0', 'N1M3*1', 'N1M4*0', 'N1M5*0', 'N2M3*0', 'N2M4*0', 'N2M5*0', 'N3M4*0', 'N3M5*0', 'N4M5*0', 'M1N2*0', 'M1N3*0', 'M1N4*0', 'M1N5*0', 'M2N3*0', 'M2N4*0', 'M2N5*0', 'M3N4*0', 'M3N5*0', 'M4N5*0', 'N1M2*0', 'N1M3*0', 'N1M4*1', 'N1M5*0', 'N2M3*0', 'N2M4*0', 'N2M5*0', 'N3M4*0', 'N3M5*0', 'N4M5*0', 'M1N2*0', 'M1N3*0', 'M1N4*0', 'M1N5*0', 'M2N3*0', 'M2N4*0', 'M2N5*0', 'M3N4*0', 'M3N5*0', 'M4N5*0', 'N1M2*0', 'N1M3*0', 'N1M4*0', 'N1M5*1', 'N2M3*0', 'N2M4*0', 'N2M5*0', 'N3M4*0', 'N3M5*0', 'N4M5*0']

but the desired output is:

Output:
['M1N2*0', 'M1N3*0', 'M1N4*0', 'M1N5*0', 'M2N3*0', 'M2N4*0', 'M2N5*0', 'M3N4*0', 'M3N5*0', 'M4N5*0', 'N1M2*1', 'N1M3*1', 'N1M4*1', 'N1M5*1', 'N2M3*0', 'N2M4*0', 'N2M5*0', 'N3M4*0', 'N3M5*0', 'N4M5*0']

How could I get this?