• 文件读写

with open('../passwd.txt' , 'rt') as f:    data = f.read()    print(data)with open('../passwd.txt', 'rt') as f:    for line in f:        print(line)with open('somefile.txt', 'wt') as f:    f.write("111")with open('../passwd.txt', 'rt', encoding='latin-1') as f:    print(f.read())