[英]Python: Why can't my program write to a file from a list?
I have a txt file of clues eg A is #, B is ?, C is @ etc. 我有一个线索的txt文件,例如A是#,B是?,C是@等。
I'm trying to read a ciphertxt file and swap the cipher-symbol using my txt file of clues above which I have imported into a list. 我正在尝试读取一个ciphertxt文件,并使用线索txt文件替换该cipher-符号,上面已将其导入列表。
For some reason, it won't perform my substitution as expected. 由于某些原因,它不会按预期执行我的替换。
def Import_Clues_to_Lists():
global letter_list
global symbol_list
file_clues=open('clues.txt','r')
for line in file_clues:
for character in line:
if character.isalpha() == True:
letter_list[int(ord(character)-65)] = line[0]
symbol_list[int(ord(character)-65)] = line[1]
file_clues.close()
def Perform_Substitution():
Import_Clues_to_Lists()
print(letter_list)
print(symbol_list)
file_words = open('words.txt','r')
temp_words = open('wordsTEMP.txt','w')
for line in file_words:
for character in line:
if character.isalpha() == False:
position = symbol_list.index(character) # get the position for the list
equivalent_letter = letter_list[position] # get the equivalent letter
temp_words.write(equivalent_letter) # substitute the symbol for the letter in the temp words file.
else:
temp_words.write(character)
file_words.close()
temp_words.close()
import os # for renaming files
#os.remove('words.txt')
#os.rename('wordsTEMP.txt','words.txt')
menu()
Any ideas where my logic has gone wrong? 有什么想法我的逻辑错了吗?
It might be better if you use a dictionary to hold your symbols and the characters they represent - a substitution dictionary. 如果使用字典来保存符号及其代表的字符,则可能会更好- 替代字典。 It will make your code more readable which might make it easier to find the problem. 这将使您的代码更具可读性,这可能会更容易发现问题。
If clues.txt
looks something like this: 如果clues.txt
看起来像这样:
a!
b#
c$
d%
Try these out: 试试看:
def Import_Clues_to_Lists():
'''Create a substitution dictionary
returns dict, {symbol : character}
'''
sub = dict()
with open('clues.txt','r') as file_clues:
for line in file_clues:
# symbol = line[1], letter = line[0]
sub[line[1]] = line[0]
return sub
def Perform_Substitution():
'''Iterate over characters of a file and substitute letters for symbols.
creates a new file --> wordsTEMP.txt
returns None
'''
# substitute is a dictionary of {symbol : character} pairs
substitute = Import_Clues_to_Lists()
for sym, char in substitute.items(): print(sym, char)
with open('words.txt','r') as file_words, open('wordsTEMP.txt','w') as temp_words:
for line in file_words:
for character in line:
if character in substitute:
character = substitute[character]
temp_words.write(character)
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.