Replace straight double quotation marks ("") and apostrophes (') with their curly equivelents, “” and ’.

quote_fix.py

file_path = input("File path: ")

f = open(file_path, 'r+')

original_text = f.read()
text = original_text

# Replace quotations
# https://stackoverflow.com/a/58567848
quote_count = text.count('"')
if quote_count % 2 == 1:
	print("Invalid input. Number of quotation marks must be even. Exiting.")
	exit()
for i in range(int(quote_count / 2 + 1)) :
    text = text.replace('"', '“', 1)
    text = text.replace('"', '”', 1)
print(f"Replaced {quote_count} quotes from text.")

# Replace apostrophes
apostrophe_count = text.count("'")
text = text.replace("'", "’")
print(f"Replaced {apostrophe_count} apostrophes from text.")

# Overwrite source file
# https://stackoverflow.com/a/2424410
f.seek(0)
f.write(text)
f.truncate()
f.close()
print(f"Overwrote {file_path} with fixed file.")

# Back up original file contents
f_backup_path = f"{file_path}.backup"
f_backup = open(f_backup_path, 'w')
f_backup.write(original_text)
f_backup.close()
print(f"Saved original {file_path} contents to {f_backup_path}.")

print("Done.")