Iteration incorrect with if statement

I have a folder path and a dictionary. My goal is to pull a value from my dictionary and use it while iterating through the folders. The value will be called fip:

import arcpy, sys, os, requests, json, xlrd, xlwt
#paths
path = "T:/CCSI/TECH/FEMA/Datasets/NFHL/NFHL_06122018"
prelim_path = "T:/CCSI/TECH/FEMA/Datasets/PreliminaryDFIRMS/Ravi-MSC/Prelim_05092018/Extracted"

#dictionary
masterdict = {'13': ['13245', '13027'], '06': ['06037']}

Everything works fine except when the fip value is found in the filename. However, if the fip is not found in the dir/filename, I still want the word "None" written to that line ('rr' value) of the spreadsheet. I tried using the below code at the same level as the if(fip in dir and '_A_' not in dir and '_B_' not in dir and '_C_' not in dir):' statement by adding an 'elif():' statement, but it essentially writes "None" for EVERY file that does not equal if statement criteria, sets therr` value to plus 1 and does that for every dirname and filename in that folder. I just want it to write "None" once if the 'fip' value does not exist in that directory. That's it. Any ideas on to resolve this iteration issue?

rr = 1 #counter
for k, v in masterdict.items():
    stateFips = k
    print(stateFips)
    fipsList = v
    print(fipsList)

    for fip in fipsList:
        for root, dirs, filename in os.walk(prelim_path):
            for dir in dirs:
                if(fip in dir and '_A_' not in dir and '_B_' not in dir and '_C_' not in dir):
                    print(dir)
                    folder = os.path.join(root, dir)
                    files = os.listdir(folder)
                    for file in files: 
                        # Create temp variable for cases
                        if('S_FIRM_Pan' in file and file[-4:] == '.shp' or 'S_FIRM_PAN' in file and file[-4:] == '.shp'):
                            prelim = os.path.join(folder, file)
                            # get data for Prelim_sx_firmpan dictionary
                            suffix = [row[0] for row in arcpy.da.SearchCursor(prelim, "SUFFIX")]
                            raw_firm_pan = [row[0] for row in arcpy.da.SearchCursor(prelim, "FIRM_PAN")]
                            Prelim_sx_firmpan = dict(zip(raw_firm_pan, suffix))
                            P = str(len(Prelim_sx_firmpan))
                            print("Initial Prelim_sx_firm count for : {} :".format(fip) + P)
                            # get data for dates
                            raw_dates = [row[0] for row in arcpy.da.SearchCursor(prelim, "PRE_DATE")]
                            pre_dates = [d for d in raw_dates if d != datetime.datetime(9999, 9, 9, 0, 0)

                            if pre_dates == [None]:
                                pre_date_1 = "None"
                                sheet1.write(rr, predateCol, pre_date_1)
                                rr = rr + 1
                                print("Predate is: ")
                                print(pre_date_1)

                            elif pre_dates == []:
                                pre_date_2 = "None"
                                sheet1.write(rr, predateCol, pre_date_2)
                                rr = rr + 1
                                print("Predate is: ")
                                print(pre_date_2)

                            else:
                                pre_date_3 = max(pre_dates)
                                pre_date_3 = pre_date_3.strftime('%m/%d/%y')
                                sheet1.write(rr, predateCol, pre_date_3)
                                print(rr)
                                rr = rr + 1
                                print("Predate is: ")
                                print(pre_date_3)
                elif(fip not in dir):
                    pre_date_4 = "None"
                    sheet1.write(rr, predateCol, pre_date_4)
                    print(rr)
                    rr = rr + 1