# -*- coding: utf-8 -*-
"""Untitled1.ipynb

Automatically generated by Colab.

Original file is located at
    https://colab.research.google.com/drive/1CMopOV_oVvz5VDo9jne_iItrHHwsiNQ-
"""

import gzip
transmem = 0
p = 1
prot = gzip.open('UP000000554.swiss.gz', 'rt')
for line in prot:
    if line.startswith('//'):
        p = 1
    if p and line.startswith('FT') and 'TRANSMEM' in line:
        transmem += 1
        p = 0
prot.close()
print(transmem)