詳細を説明するコメント付きのコードは次のとおりです。
# ask user for an input until an integer is provided
prompt = "Please, enter the gematric value of the word: "
while True: # infinite loop
try:
# ask user for an input; convert it to integer immediately
userinput = int(raw_input(prompt))
except ValueError: # `int()` can't parse user input as an integer
print('the gematric value must be an integer. Try again')
else:
break # got an integer successfully; exit the loop
# use `with` statement to close the file automatically
# `'r'` is default; you don't need to specify it explicitly
with open(r'c:\school\dictionarytest.txt') as inputfile:
#XXX inputfile.lower() # WRONG!!! file object doesn't have .lower() method
# assuming `dictionarytest.txt` has one word per line
for word in inputfile: # read the file line by line
word = word.strip() # strip leading/trailing whitespace
if gematric_value(word) == userinput:
print(word) # print words that match user input
関数gematric_value()
は次のとおりです。
def gematric_value(word):
"""Sum of numerical values of word's characters.
a -> 1, b -> 2, c -> 3; A -> 1, B -> 2, etc
"""
# word is a string; iterating over it produces individual "characters"
# iterate over lowercased version of the word (due to A == a == 1)
return sum(ord(c) - ord('a') + 1 for c in word.lower())
注: 上記のコメント スタイルをコードで使用しないでください。教育目的でのみ使用できます。コードの読者は Python に精通していると想定する必要があります。