Python добавляет на файл
with open(filename, "a+") as f:
f.write('Hello World')
Nutty Narwhal
with open(filename, "a+") as f:
f.write('Hello World')f = open(filelocation/name, "a")
f.write("Now the file has more content!")
f.close()
#open and read the file after the appending:
f = open("C:/test/input.txt", "r")
print(f.read())