list_opreation.py

list1=['one','two','three']
list2=['three','four','five']

#Merge two list
merged_result=list1+list2

#Convert File to List - each line will be treated as 1 elemtent in list
file_list = [line.rstrip('\n') for line in open("filename.txt")]

#Remove all the duplicate element from the list
file_list = list(set(file_list))

#Remove the empty elements/'' from the list
file_list = [x for x in file_list if x] 

#Total elements count in list
list_count=len(file_list)

#Search element exist in List
if "search_text" in file_list: 
	print("Element Found")

#Write list to File
input_list=['line1','line2','line3']
with open('out_file.txt','w') as fi:
	for element in input_list:
		fi.write(element+"\n")
        
#Check file exist and convert that file to list   
input_file='inp_file.txt'
if os.path.isfile(input_file): #Check file exist
    with open(output_file) as f: #Open file
        output_list = f.read().splitlines() #Convert file to list