List Comparison in Python with Diff as output - python-2.7

Question

The below script i have to compare Test1 vs Test2.Test1 and Test2 data is mentioned in the bottom .I tried to make it a generic one so that it will work for different devices also.The below script i have to compare Test1 vs Test2.Test1 and Test2 data is mentioned in the bottom .I tried to make it a generic one so that it will work for different devices also
import re
data_cleaned = {}
current_key = ''
action_flag = False
data_group = []
if_found_vlan = True
output = open('./output.txt','r').read()
switch_red = re.findall(r'(\w*-RED\d{0,1})', output)[0]
switch_blue = re.findall(r'(\w*-BLUE\d{0,1})', output)[0]
for line in open('./output.txt'):
m = re.match(r'(\w*-RED\d{0,1}|\w*-BLUE\d{0,1})# sh run vlan \d+', line)
if m:
if not if_found_vlan:
data_cleaned[current_key].append([])
if_found_vlan = False
current_key = m.group(1)
if not data_cleaned.has_key(current_key):
data_cleaned[current_key] = []
continue
mm = re.match(r'vlan \d+', line)
if mm:
if_found_vlan = True
action_flag = True
data_group = []
if action_flag and '' == line.strip():
action_flag = False
data_cleaned[current_key].append(data_group)
if action_flag:
data_group.append(line.replace('\r', '').replace('\n', ''))
if not if_found_vlan:
data_cleaned[current_key].append([])
#print ("+++++++++++++++++ The missing configuration ++++++++++++++\n")
print switch_blue + "#" + " has below missing VLAN config\n "
p = [item for index, item in enumerate(data_cleaned[switch_blue]) if [] != [it for it in item if it not in data_cleaned[switch_red][index]]]
print('\n'.join(['\n'.join(item) for item in p]))
print ("+++++++++++++++++++++++++++++++\n")
print switch_red + "#" + " has below missing VLAN config\n "
q = [item for index, item in enumerate(data_cleaned[switch_red]) if [] != [it for it in item if it not in data_cleaned[switch_blue][index]]]
print('\n'.join(['\n'.join(item) for item in q]))

Answer 1

Update with your raw output, I think use a one-dimensional list to represent your output is not a good way for further handling.
When we handle a data, we first need to clean the data & setup a model easy to handle for further program processing, so I use a dict with a two-dimensional list inside it to model your output, and finally easier to process.
import re
data_cleaned = {}
current_key = ''
action_flag = False
data_group = []
if_found_vlan = True
for line in open('./output.txt'):
m = re.match(r'(Test\d+)# sh run vlan \d+', line)
if m:
if not if_found_vlan:
data_cleaned[current_key].append([])
if_found_vlan = False
current_key = m.group(1)
if not data_cleaned.has_key(current_key):
data_cleaned[current_key] = []
continue
mm = re.match(r'vlan \d+', line)
if mm:
if_found_vlan = True
action_flag = True
data_group = []
if action_flag and '' == line.strip():
action_flag = False
data_cleaned[current_key].append(data_group)
if action_flag:
data_group.append(line.replace('\r', '').replace('\n', ''))
if not if_found_vlan:
data_cleaned[current_key].append([])
print ("+++++++++++++++++ The missing configuration is++++++++++++++\n")
p = [item for index, item in enumerate(data_cleaned['Test2']) if [] != [it for it in item if it not in data_cleaned['Test1'][index]]]
print('\n'.join(['\n'.join(item) for item in p]))
print ("+++++++++++++++++ The missing configuration is++++++++++++++\n")
q = [item for index, item in enumerate(data_cleaned['Test1']) if [] != [it for it in item if it not in data_cleaned['Test2'][index]]]
print('\n'.join(['\n'.join(item) for item in q]))