zamiana liter w pętli python

Question

Witam, mam pewien problem. Napisałem taki oto kod 

	litery = ['A','a','B','b','C','c','D','d','E','e','F','f','G','g','H','h','I','i','J','j','K',
	'k','L','l','M','m','N','n','O','o','P','p','Q','q','R','r','S','s','T','t','U','u','V','v','W',
	'w','X','x','Y','y','Z','z']

	for litera in litery:
		replace = readlog.read().replace(litera + ' => ','')
		print(replace)

Problem jest taki, że tylko litera A jest usuwana, a reszta pozostaje bez zmian.

Answer 1

Prawdopodobnie readlog to plik. Musisz pamiętać, że po przeczytaniu pliku trzeba cofnac sie do poczatku readlog.seek(0) inaczej read zwroci pusty string. Ale w tym przypadku pokusiłbym się raczej o wywalenie 

readlog.read()

przed petle, bo nie ma sensu czytac go za kazdym razem.

Wypisywanie całego alfabetu recznie to nie jest dobry pomysł bo można coś pominąć. Lepiej użyć:

import string
litery = list(string.ascii_letters)

 

Comments

	encryption = readlog.read()
	for litera in litery:
		print(encryption.replace(litera + ' => ',''))
		readlog.seek(0)

o coś takiego ci chodziło?

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Nie potrzebujesz przewijac pliku przy pomocy seek skoro czytasz go tylko raz:

import string

litery = list(string.ascii_letters)
text = readlog.read()
for litera in litery:
    text = text.replace(litera + ' => ', '')
    print(text)

 

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Niestety, ale dalej tak średnio to działa. Może dam tu cały kod bo może problem leży dzie indziej 

# -*- coding: utf-8 -*-
from __future__ import print_function
from secrets import randbelow
import string
import re


def SchemeGenerator():
	#{
	log = open("encryption_scheme.txt", "w")
	readlog = open("encryption_scheme.txt", "r")

	print('A => ', randbelow(1000000), file = log),
	print('a => ', randbelow(1000000), file = log),
	print('Ą => ', randbelow(1000000), file = log),
	print('ą => ', randbelow(1000000), file = log),
	print('B => ', randbelow(1000000), file = log),
	print('b => ', randbelow(1000000), file = log),
	print('C => ', randbelow(1000000), file = log),
	print('c => ', randbelow(1000000), file = log),
	print('Ć => ', randbelow(1000000), file = log),
	print('ć => ', randbelow(1000000), file = log),
	print('D => ', randbelow(1000000), file = log),
	print('d => ', randbelow(1000000), file = log),
	print('E => ', randbelow(1000000), file = log),
	print('e => ', randbelow(1000000), file = log),
	print('Ę => ', randbelow(1000000), file = log),
	print('ę => ', randbelow(1000000), file = log),
	print('F => ', randbelow(1000000), file = log),
	print('f => ', randbelow(1000000), file = log),
	print('G => ', randbelow(1000000), file = log),
	print('g => ', randbelow(1000000), file = log),
	print('H => ', randbelow(1000000), file = log),
	print('h => ', randbelow(1000000), file = log),
	print('I => ', randbelow(1000000), file = log),
	print('i => ', randbelow(1000000), file = log),
	print('J => ', randbelow(1000000), file = log),
	print('j => ', randbelow(1000000), file = log),
	print('K => ', randbelow(1000000), file = log),
	print('k => ', randbelow(1000000), file = log),
	print('L => ', randbelow(1000000), file = log),
	print('l => ', randbelow(1000000), file = log),
	print('Ł => ', randbelow(1000000), file = log),
	print('ł => ', randbelow(1000000), file = log),
	print('M => ', randbelow(1000000), file = log),
	print('m => ', randbelow(1000000), file = log),
	print('N => ', randbelow(1000000), file = log),
	print('n => ', randbelow(1000000), file = log),
	print('Ń => ', randbelow(1000000), file = log),
	print('ń => ', randbelow(1000000), file = log),
	print('O => ', randbelow(1000000), file = log),
	print('o => ', randbelow(1000000), file = log),
	print('Ó => ', randbelow(1000000), file = log),
	print('ó => ', randbelow(1000000), file = log),
	print('P => ', randbelow(1000000), file = log),
	print('p => ', randbelow(1000000), file = log),
	print('R => ', randbelow(1000000), file = log),
	print('r => ', randbelow(1000000), file = log),
	print('S => ', randbelow(1000000), file = log),
	print('s => ', randbelow(1000000), file = log),
	print('Ś => ', randbelow(1000000), file = log),
	print('ś => ', randbelow(1000000), file = log),
	print('T => ', randbelow(1000000), file = log),
	print('t => ', randbelow(1000000), file = log),
	print('U => ', randbelow(1000000), file = log),
	print('u => ', randbelow(1000000), file = log),
	print('W => ', randbelow(1000000), file = log),
	print('w => ', randbelow(1000000), file = log),
	print('Y => ', randbelow(1000000), file = log),
	print('y => ', randbelow(1000000), file = log),
	print('Z => ', randbelow(1000000), file = log),
	print('z => ', randbelow(1000000), file = log),
	print('Ż => ', randbelow(1000000), file = log),
	print('ż => ', randbelow(1000000), file = log),
	print('Ź => ', randbelow(1000000), file = log),
	print('ź => ', randbelow(1000000), file = log),
	log.close()

	litery = ['A','a','B','b','C','c','D','d','E','e','F','f','G','g','H','h','I','i','J','j','K',
	'k','L','l','M','m','N','n','O','o','P','p','Q','q','R','r','S','s','T','t','U','u','V','v','W',
	'w','X','x','Y','y','Z','z']

	encryption = readlog.read()
	for litera in litery:
		text = encryption.replace(litera + ' => ', '')
		print(text)
	#}

SchemeGenerator()

 

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I co to ma robić, bo patrze i nie rozumiem. Najpierw piszesz potem usuwasz?

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To usuwanie będzie w zupełnie innym skrypcie, ale teraz próbuję ogarnąć jak to działa