[Python] How to keep \n in encrypting with python?

In this simple code when I give it a text file, the program encrypts it and decrypts it afterwards, the question is why the line if ch != '\n' doesn't work and '\n's are all ignored when the file is decrypted?

# Encryption
file_location = input('Enter the loaction of your text file: ')

def encrypt_file(paragraphs: list):
output = ''

for ph in paragraphs:
for ch in ph:
ASCII_of_ch = ord(ch)
ASCII_of_ch = int((ASCII_of_ch + 5))
output += chr(ASCII_of_ch)

return output

with open(file_location, 'r+', encoding='UTF-8') as text_file:
text_paragraphs = text_file.readlines()
enc_text = encrypt_file(text_paragraphs)

text_file.seek(0)
text_file.write(enc_text)
print('Done!!')



# Decryption
file_location = input('Enter the loaction of your encrypted file: ')

def decrypt_file(text: str):
output = ''

for ch in text:
ASCII_of_ch = ord(ch)
ASCII_of_ch = int((ASCII_of_ch - 5))
output += chr(ASCII_of_ch)

return output

with open(file_location, 'r+', encoding='UTF-8') as text_file:
file_text = text_file.read()
enc_text = decrypt_file(file_text)

text_file.seek(0)
text_file.write(enc_text)
print('Done!!')


When I write:

Hi


How are you?


What's up?
​

after decryption it becomes:

Hi How are you? What's up?
​

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