Why is Python-nmap is not listing all_protocols() when I specify a port rage?

Question

I am a beginner with Python and I cannot get nmap to list all the protocols:

import nmap
nmap_path = [r"C:\Program Files (x86)\Nmap\nmap.exe"]
nmScan = nmap.PortScanner(nmap_search_path=nmap_path)
nmScan.scan('127.0.0.1', '25-200')

# >>> {'nmap': {'command_line': '"C:\\\\Program Files (x86)\\\\Nmap\\\\nmap.exe" -oX - -p 25-200 -sV 127.0.0.1', 'scaninfo': {'tcp': {'method': 'syn', 'services': '25-200'}}, 'scanstats': {'timestr': 'Mon Nov  6 11:46:34 2023', 'elapsed': '37.95', 'uphosts': '1', 'downhosts': '0', 'totalhosts': '1'}}, 'scan': {'127.0.0.1': {'hostnames': [{'name': 'localhost', 'type': 'PTR'}], 'addresses': {'ipv4': '127.0.0.1'}, 'vendor': {}, 'status': {'state': 'up', 'reason': 'localhost-response'}}}}

nmScan['127.0.0.1'].all_protocols()

# >>> []

It works fine when I list the port range from 80-80 and I get:

import nmap
nmap_path = [r"C:\Program Files (x86)\Nmap\nmap.exe"]
nmScan = nmap.PortScanner(nmap_search_path=nmap_path)
nmScan.scan('127.0.0.1', '80-80')

# >>> {'nmap': {'command_line': '"C:\\\\Program Files (x86)\\\\Nmap\\\\nmap.exe" -oX - -p 80-80 -sV 127.0.0.1', 'scaninfo': {'tcp': {'method': 'syn', 'services': '80'}}, 'scanstats': {'timestr': 'Mon Nov  6 11:39:45 2023', 'elapsed': '2.78', 'uphosts': '1', 'downhosts': '0', 'totalhosts': '1'}}, 'scan': {'127.0.0.1': {'hostnames': [{'name': 'localhost', 'type': 'PTR'}], 'addresses': {'ipv4': '127.0.0.1'}, 'vendor': {}, 'status': {'state': 'up', 'reason': 'localhost-response'}, 'tcp': {80: {'state': 'filtered', 'reason': 'no-response', 'name': 'http', 'product': '', 'version': '', 'extrainfo': '', 'conf': '3', 'cpe': ''}}}}}

nmScan['127.0.0.1'].all_protocols()

# >>> ['tcp']