Convert values inside bracket into binary forms by using python

Question

there's a sample input file as follows(input1.txt)

(For your information, 4'hF means its value is 15 by decimal and it is binary 4 bits and its value is 1111 as binary per each bit. So, 4'hF is same as 4'b1111)

{pDHY_es[3:0]}                    = 4'hF;
{pDHY_asq,1'b0,pDHY_qr,1'b1}      = 4'hB;
{pQHY_yd,pRTY_a[2:0]}             = 4'h5;
{1'b0,1'b0,pDSY_qr,pDNR_pf}       = 4'h3;
{pQHT_yd[1:0],pDRY_pf,pTUCF_xlck} = 4'h9;

and What I want to do is to convert all the elements inside bracket(that starts with the letter'p') into its bit-assigned value. So In this case, the output would be as follows(output.txt)

pDHY_es[3:0] = 4'b1111;
pDHY_asq     = 1'b1;
pDHY_qr      = 1'b1;
pQHT_yd      = 1'b0;
pRTY_a[2:0]  = 3'b101;
pDSY_qr      = 1'b1;
pDNR_pf      = 1'b1;
pQHY_yd[1:0] = 2'b10;
pDRY_pf      = 1'b0;
pTUCF_xlck   = 1'b1;

To sum up, What I want to do is

1.extract all the element inside bracket that starts with the letter'p'.

2.put the value of each element into its bit-assigned form.

I've thought about using hex to binary converting function as follows: Convert hex to binary but Itself doesn't seem to meet what I need:

Answer 1

Parse the lines with split() and strip()

inp = """{pDHY_es[3:0]}                    = 4'hF;
{pDHY_asq,1'b0,pDHY_qr,1'b1}      = 4'hB;
{pQHY_yd,pRTY_a[2:0]}             = 4'h5;
{1'b0,1'b0,pDSY_qr,pDNR_pf}       = 4'h3;
{pQHT_yd[1:0],pDRY_pf,pTUCF_xlck} = 4'h9;"""

def convertBitpattern(s: str):
  numBits, bits = s.split("'")
  numBits = int(numBits)
  return numBits, format(int(bits[1:], 16 if bits[0] == 'h' else 2), f"0{numBits}b")

def getNumbits(field):
  numBits = 1
  isField = False
  if field[0] in '0123456789':
    numBits, _ = convertBitpattern(field)
  else:
    isField = True
    parts = field.split('[')
    if len(parts) == 2:
      numBits = int(parts[1].split(':')[0])+1
  return isField, numBits

for line in inp.split('\n'):
  fields, bitpattern = list(map(lambda x: x.strip().strip('{};'), line.split('=')))
  _, bits = convertBitpattern(bitpattern)
  for field in fields.split(','):
    isField, numBits = getNumbits(field)
    fieldBits, bits = bits[:numBits], bits[numBits:]
    if isField:
      print(f"{field:15} = {numBits}'b{fieldBits};")

Output

pDHY_es[3:0]    = 4'b1111;
pDHY_asq        = 1'b1;
pDHY_qr         = 1'b1;
pQHY_yd         = 1'b0;
pRTY_a[2:0]     = 3'b101;
pDSY_qr         = 1'b1;
pDNR_pf         = 1'b1;
pQHT_yd[1:0]    = 2'b10;
pDRY_pf         = 1'b0;
pTUCF_xlck      = 1'b1;