How to compare a case insensitive string to 2 list in python-CodePudding

I need to compare a string against 2 list. I have the following list:

labels = ['admin', 'Admin', 'staff', 'techAdmin', 'techadmin']
accessCodeList = ['0x000', '0xAaA']

String Inputs:

mystring1 = "admin 0x000"
mystring2 = "demo 0x000"
mystring3 = "techAdmin 0x00"
mystring4 = "tech 0xAaA"
mystring5 = "techAdmin 0xAaA"
mystring6 = "Staff 0x000"   #-- starts with Uppercase

Outputs:

mystring1 = "Found"
mystring2 = "Not Found"
mystring3 = "Not Found"
mystring4 = "Not Found"
mystring5 = "Found"
mystring6 = "Found"  #-- case insensitive search result

CodePudding user response：

Try converting labels and access_codes into a set for O(1) lookup time:

>>> labels = ['admin', 'Admin', 'staff', 'techAdmin', 'techadmin']
>>> access_codes = ['0x000', '0xAaA']
>>> inputs = ['admin 0x000', 'demo 0x000', 'techAdmin 0x00', 'tech 0xAaA', 'techAdmin 0xAaA', 'Staff 0x000']
>>> labels = {l.lower() for l in labels}
>>> access_codes = set(access_codes)
>>> for s in inputs:
...     label, code = s.split()
...     if label.lower() in labels and code in access_codes:
...         print(f'{s}, Found')
...     else:
...         print(f'{s}, Not Found')
...
admin 0x000, Found
demo 0x000, Not Found
techAdmin 0x00, Not Found  # 0x00 != 0x000 I think this is a typo in your example?
tech 0xAaA, Not Found
techAdmin 0xAaA, Found
Staff 0x000, Found

CodePudding user response：

Convert your input strings to lowercase and then check if the other lists contain the words or not. :

labels = ['admin', 'staff', 'techadmin']
accessCodeList = ['0x000', '0xAaA']

mystring6 = "Staff 0x000" 
mystring6_split = mystring6.split()
mystring6_split[0] = mystring6_split[0].lower()

if mystring6_split[0] in labels and mystring6_split[1] in accessCodeList:
    print('Found')
else:
    print('Not Found')

CodePudding user response：

Use casefold.

labels = ['admin', 'staff', 'techadmin']
accessCodeList = ['0x000', '0xAaA']

mystring1 = "admin 0x000"
mystring2 = "demo 0x000"
mystring3 = "techAdmin 0x00"
mystring4 = "tech 0xAaA"
mystring5 = "techAdmin 0xAaA"
mystring6 = "Staff 0x000"   #-- starts with Uppercase


label, access_code = mystring1.split()
print('Found' if label.casefold() in labels and access_code in accessCodeList else 'Not Found')

label, access_code = mystring2.split()
print('Found' if label.casefold() in labels and access_code in accessCodeList else 'Not Found')

label, access_code = mystring3.split()
print('Found' if label.casefold() in labels and access_code in accessCodeList else 'Not Found')

label, access_code = mystring4.split()
print('Found' if label.casefold() in labels and access_code in accessCodeList else 'Not Found')

label, access_code = mystring5.split()
print('Found' if label.casefold() in labels and access_code in accessCodeList else 'Not Found')

label, access_code = mystring6.split()
print('Found' if label.casefold() in labels and access_code in accessCodeList else 'Not Found')

and followind the DRY principle, you could create a function.

def find_in_str(mystr):
    label, access_code = mystr.split()
    return 'Found' if label.casefold() in labels and access_code in accessCodeList else 'Not Found'

print(find_in_str(mystring1))
print(find_in_str(mystring2))
print(find_in_str(mystring3))
print(find_in_str(mystring4))
print(find_in_str(mystring5))
print(find_in_str(mystring6))