keys_ = b64encode(new_s.encode('utf-8')).decode('utf-8')
时间: 2023-10-02 14:12:51 浏览: 158
As an AI language model, I cannot provide the exact context of this code snippet. However, I can describe what this line of code does.
This line of code uses the b64encode function from the base64 module in Python. It encodes a newly created string, 'new_s', into bytes using the utf-8 encoding. Then, it encodes the bytes using base64 encoding. Finally, it decodes the result from bytes into a string using the utf-8 encoding and assigns it to the variable 'keys_'.
In summary, this line of code performs a base64 encoding of a string and stores the result in a variable as a string.
相关问题
try: data, addr = s.recvfrom(1024) # 等待接收客户端消息存放在2个变量data和addr里 # print(data) json_data=json.loads(data.decode('utf-8')) print(json_data) if json_data['message_type']=="init_message": if json_data['content'] not in user: # address不等于addr时执行下面的代码 user[json_data['content']]=addr user_list=[i for i in user.keys()] json_data['online_user'] = f'{user_list}' json_str = json.dumps(json_data, ensure_ascii=False) for address in user.values(): s.sendto(json_str.encode('utf-8'), address) # 发送data和address到客户端 print(json_data['content'] + '进入了聊天室') print(f'当前在线用户{user_list}')代码解释
这段代码是一个UDP协议的服务器端程序,主要实现以下功能:
1. 等待接收客户端发送的消息,存放在变量data和addr中;
2. 将接收到的消息转换成json格式,解码为Python中的字典类型;
3. 根据消息中的类型和内容,进行不同的处理:
- 如果是"init_message"类型的消息,表示有客户端加入聊天室,将该用户的昵称和地址添加到字典user中;
- 向所有已连接的客户端发送该用户加入聊天室的消息和当前在线用户列表;
4. 输出相关信息,如新用户加入聊天室、当前在线用户列表等。
其中,代码中使用了Python内置的json库,实现了json格式的解析和封装。同时,通过字典类型的数据结构存储了聊天室中的在线用户列表。
exportData(data, name) { let allData; let columnWidths = []; const workbook = XLSX.utils.book_new(); allData = data; const worksheet = XLSX.utils.json_to_sheet(allData); for (let i = 0; i < Object.keys(data).length; i++) { columnWidths.push({ wch: 20 }) } worksheet['!cols'] = columnWidths; // 设置字体和字号 const cellStyle = { font: { name: "微软雅黑", sz: 11 } }; const range = XLSX.utils.decode_range(worksheet['!ref']); for (let R = range.s.r; R <= range.e.r; ++R) { for (let C = range.s.c; C <= range.e.c; ++C) { const cellAddress = { c: C, r: R }; const cellRef = XLSX.utils.encode_cell(cellAddress); worksheet[cellRef].s = cellStyle; } } XLSX.utils.book_append_sheet(workbook, worksheet, name); const currentDate = new Date(); const year = currentDate.getFullYear(); const month = ('0' + (currentDate.getMonth() + 1)).slice(-2); const day = ('0' + currentDate.getDate()).slice(-2); const hours = ('0' + currentDate.getHours()).slice(-2); const minutes = ('0' + currentDate.getMinutes()).slice(-2); const seconds = ('0' + currentDate.getSeconds()).slice(-2); const currentTime = `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`; const filename = name + '_' + currentTime + '.xlsx'; XLSX.writeFile(workbook, filename); }该代码导出的xlsx文件中的文字是宋体,为什么不是微软雅黑
可能是因为在导出xlsx文件时,没有正确设置字体样式。在代码中,有一个名为`cellStyle`的变量用于设置字体和字号,但没有设置字体名称。为了将文字设置为微软雅黑字体,可以将`cellStyle`对象中的`font`属性修改为以下内容:
```javascript
const cellStyle = {
font: { name: "微软雅黑", sz: 11, rFont: "微软雅黑" }
};
```
通过添加`rFont: "微软雅黑"`,将会将文字设置为微软雅黑字体。然后,将修改后的`cellStyle`应用到单元格中,代码如下:
```javascript
worksheet[cellRef].s = cellStyle;
```
这样,导出的xlsx文件中的文字应该会显示为微软雅黑字体了。
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