How to trigger for loop after while

[Coricoco_fr]

Hello,

input_number=3
layer=5
paulis = list(product(['I','X','Y','Z'],repeat=input_number))
a = list(product(['i','x','y','z'],repeat = input_number))
rho_1='rho_1' 
el=[]
element1=""
for order in range(len(paulis)):   
    while(layer>0):  
        element1=element1+'p_{'+str(layer)+a[order][0]+a[order][1]+a[order][2]+'}*'
        layer=layer-1
        if layer== 0: 
            element1=element1+'+'
            el.append(element1)
    else:
        layer=5
        
print(element1)

or

for order in range(len(paulis)):
    layer = 5
    while(layer>0):  
        element1=element1+'p_{'+str(layer)+a[order][0]+a[order][1]+a[order][2]+'}*'
        layer=layer-1
        if layer== 0: 
            element1=element1+'+'
            el.append(element1)