How to convert list append with for, if, elif to list comprehension

I' like to convert list append code with mulitple for and if, elif to list comprehension. I tried but only temp_list worked. temp_list2 did not work properly

Original code

temp_list = []
temp_array = accd['ACCD_SEQ'].values
temp_list = [i for i in temp_array if len(accd[accd['ACCD_DTL'].str.contains(i)]) != 0]

temp_list2 = []

for i in temp_list:
    if len(accd[accd['ACCD_DTL'].str.contains(i)]) == 1:
        temp_list2.append(i)
    elif len(accd[accd['ACCD_DTL'].str.contains(i)]) > 1:
        for j in range(len(accd[accd['ACCD_DTL'].str.contains(i)])):
            temp_list2.append(i)
    else:
        pass

My trial

temp_list2 = [i if len(accd[accd['ACCD_DTL'].str.contains(i)]) == 1 else i for j in range (len(accd[accd['ACCD_DTL'].str.contains(i)])) if len(accd[accd['ACCD_DTL'].str.contains(i)]) > 1 for i in temp_list

This code said "UnboundLocalError : local variable 'i' referenced before assignment"

Anyone can help to fix it?