In Python3 how would you parse each character of an http post to ensure the requ

Question

 In Python3 how would you parse each character of an http post to ensure the request is valid? Primarily concerned with POST /r1.html and Content-type: ...? Possibly by import re?  POST /r1.html HTTP/1.1    Host: localhost:8001    Connection: keep-alive    Content-Length: 32    Cache-Control: max-age=0    Origin: http://localhost:8001    Upgrade-Insecure-Requests: 1    User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4)    Content-Type: application/x-www-form-urlencoded 

    Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8    Referer: http://localhost:8001/f1.html    Accept-Encoding: gzip, deflate, br    Accept-Language: en-US,en;q=0.8 

    Cookie: Webstorm-ea36d52b=7cf702c4-f920-40c7-acfd-a25b1d77b36c    fname=John&lname=Doe&gender=male 

Explanation / Answer

# open morseCode.txt file to read morseCodeFile = open('morseCode.txt', 'r') # format is :< > # create an empty list for letters letterList = [] # create an empty list for morse codes codeList = [] # read the first line of the morseCode.txt line = morseCodeFile.readline() # while the line is not empty while line != '': # strip the from the end of each line line = line.rstrip() # append the first character of the line to the letterList letterList.append(line[0]) # append the 3rd to last character of the line to the codeList codeList.append(line[2:]) # read the next line line = morseCodeFile.readline() # close the file morseCodeFile.close() try: # get user input print("Enter a string to convert to morse code or press to quit") userInput = input("") # while the user inputs something, continue while userInput: # strip the spaces from their input userInput = userInput.replace(' ', '') # convert to uppercase userInput = userInput.upper() # set string accumulator accumulateLetters = '' # go through each letter of the word for x in userInput: # get the index of the letterList using x index = letterList.index(x) # get the morse code value from the codeList using the index found above value = codeList[index] # accumulate the letter found above accumulateLetters += value # print the letters print(accumulateLetters) # input to try again or to quit print("Try again or press to quit") userInput = input("") except ValueError: print("Error in input. Only alphanumeric characters, a comma, and period allowed") main()

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