小编Osa*_*war的帖子

我是Mac的新手,我正在尝试在MAC上安装MySQLdb for Python但是在按照http://www.tutorialspoint.com/python/python_database_access.htm上提到的步骤操作后,我在运行后收到错误

$ python setup.py build

错误:

clang: warning: argument unused during compilation: '-mno-fused-madd'
_mysql.c:44:10: fatal error: 'my_config.h' file not found
#include "my_config.h"
     ^
1 error generated.
error: command 'cc' failed with exit status 1

注意:我的"mysql_config"路径是/ Applications/MAMP/Library/bin/mysql_config我该怎么办？

有没有办法在Python中为数组中的键赋值？

PHP中的示例:

$inputArr = array(
                'vertex'=>values[0],
                'visited'=>values[1],
                'letter' => $values[2]
                )

这是我在Python中尝试的方式:

file_name = input('Enter a file name: ')
f = open(file_name, 'r')
data = f.readlines() //Read the lines
for line in data: 
      values = line.split(' ') Split line following the spaces
      inputArr = array(
                'vertex'=>values[0], //Pass each value to a key in that array
                'visited'=>values[1],
                'letter' => $values[2]
                )
      print (inputArr)

我试图使用pop与列表,但它给了我以下错误

AttributeError: 'str' object has no attribute 'pop'

我使用pop的方式是:

vertex = my_queue.pop()

令人困惑的是,当我使用print(顶点)时,它打印出数据,这意味着它工作正常,但同时显示错误令人困惑.

我的代码:

 def bfs(my_data):
      my_queue = [] #array to store vertices
      #print(my_data[0])
      my_queue.insert(0, my_data[0]); 
      my_data[0]['visited'] = '1';
      int_vertex = []

      while my_queue:
                vertex = my_queue.pop()
                for n_vertex in vertex['neighbors']:
                          #print(type(n_vertex))
                          int_vertex = int(n_vertex)
                          if my_data[int_vertex]['visited'] == '0':
                                    my_data[int_vertex]['visited'] = '1'
                                    test.insert(0, my_data[int_vertex])
                                    my_queue = str(test)

my_queue和my_data是列表,顶点是dict

我正在尝试使用验证方法验证Signin()和Signup()的用户名和密码字段.现在,当我输入正确的用户名时,它会继续显示错误,我不知道为什么.

验证方法:

void signup_username_validation(String username) //Username validation for signup
{
    String user_name = ""; 
    if(user_name.length() < 6 || user_name.length() > 15)
    {
        System.out.println("Username cannot be less then 6 and greater then 15 characters");
        Signup();

    }

}

void signup_password_validation(String password) //Password validation for signup
{
    String pass = ""; 

    if(pass.length() < 6)
    {
        System.out.println("Password cannot be less then 6 characters");
        Signup();
    }

}

这就是我打电话给他们的方式

    System.out.println("Enter Username: ");
    username = keyboard.next();
    signup_username_validation(username);

    System.out.println("Enter Password: ");
    password = keyboard.next();
    signup_password_validation(password);