自学教程：Python 删除文件每一行的行号思路解读

def second_of_str(str,splitsymbol):    s = str.split(splitsymbol,1)   # 分隔符右边的元素    # if  len(s) == 1:    #     return []    return s[1]def move(file_path, new_file_path):    with open(file_path,encoding='utf-8') as f:        content = f.read().splitlines()    # for line in content:    #     print(line)    new_content = []    for line in content:        new_line = second_of_str(line,'.')        # 去掉后的每行加入新列表        new_content.append(new_line)    for line in new_content:        print(line)    f1 = open(new_file_path,encoding='utf-8',mode = 'w')    for line in new_content:        f1.writelines(line)        f1.writelines(["/n"])    f1.close()    return new_contentif __name__ == '__main__':    f = move('1.txt','2.txt')