file=open(r'C:\Users\makcoo\Desktop\test.txt','w',encoding='utf-8')
file.write('f')
file.close()

file=open(r'C:\Users\makcoo\Desktop\test.txt','a',encoding='utf-8')
file.write('vgh')
file.close()

with open(r'C:\Users\makcoo\Desktop\test.txt','w',encoding='utf-8') as file:
    file.write('gggg')