假设我有一个文件file1.py，如下所示：
{
"status": "ok",
"count": 2,
"count_total": 2,
"pages": 1,
"posts": [
{
"id": 22,
"type": "userstiago",
"slug": "rascunho-automatico-2",
"url": "http://tkdhkd.96.lt/userstiago/rascunho-automatico-2/",
"status": "publish",
"title": "Rascunho automático",
"title_plain": "Rascunho automático",
"content": "",
"excerpt": "",
"date": "2016-05-10 18:00:48",
"modified": "2016-05-10 18:00:48",
"categories": [],
"tags": [],
"author": {
"id": 1,
"slug": "admin",
"name": "admin",
"first_name": "Tiago",
"last_name": "Goes",
"nickname": "Tiagodread",
"url": "",
"description": "Administrador da pagina"
},
"comments": [],
"attachments": [],
"comment_count": 0,
"comment_status": "closed",
"custom_fields": {
"id": [
"11111111111111"
],
"name": [
"Priscila"
],
"pass": [
"priscila"
],
"client_type": [
"common"
]
},
"taxonomy_tipo_cliente": []
},
{
"id": 21,
"type": "userstiago",
"slug": "rascunho-automatico",
"url": "http://tkdhkd.96.lt/userstiago/rascunho-automatico/",
"status": "publish",
"title": "Rascunho automático",
"title_plain": "Rascunho automático",
"content": "",
"excerpt": "",
"date": "2016-05-10 17:41:12",
"modified": "2016-05-10 17:41:12",
"categories": [],
"tags": [],
"author": {
"id": 1,
"slug": "admin",
"name": "admin",
"first_name": "Tiago",
"last_name": "Goes",
"nickname": "Tiagodread",
"url": "",
"description": "Administrador da pagina"
},
"comments": [],
"attachments": [],
"comment_count": 0,
"comment_status": "closed",
"custom_fields": {
"id": [
"456589546"
],
"name": [
"Alfred"
],
"pass": [
"12345"
],
"client_type": [
"common"
]
},
"taxonomy_tipo_cliente": []
}
]
}
我还有另一个文件file2.py为
package tiagogoes.wprestandroidreceiver;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
/**
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final Button GetServerData = (Button) findViewById(R.id.GetServerData);
GetServerData.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
// WebServer Request URL
String serverURL = "http://tkdhkd.96.lt/api/get_user_posts/";
// Use AsyncTask execute Method To Prevent ANR Problem
new LongOperation().execute(serverURL);
}
});
}
// Class with extends AsyncTask class
private class LongOperation extends AsyncTask<String, Void, Void> {
// Required initialization
private final HttpClient Client = new DefaultHttpClient();
private String Content;
private String Error = null;
private ProgressDialog Dialog = new ProgressDialog(MainActivity.this);
String data = "";
TextView uiUpdate = (TextView) findViewById(R.id.output);
TextView jsonParsed = (TextView) findViewById(R.id.jsonParsed);
int sizeData = 0;
EditText txtlogin = (EditText) findViewById(R.id.txtlogin);
EditText txtsenha = (EditText) findViewById(R.id.txtsenha);
ArrayList<Usuario> users = new ArrayList<>();
String loginloc, senhaloc;
protected void onPreExecute() {
// NOTE: You can call UI Element here.
//Start Progress Dialog (Message)
loginloc = txtlogin.getText().toString();
senhaloc = txtsenha.getText().toString();
Dialog.setMessage("Please wait..");
Dialog.show();
try {
// Set Request parameter
data += "&" + URLEncoder.encode("data", "UTF-8") + "=" + txtlogin.getText();
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
// Call after onPreExecute method
protected Void doInBackground(String... urls) {
/************ Make Post Call To Web Server ***********/
BufferedReader reader = null;
// Send data
try {
// Defined URL where to send data
URL url = new URL(urls[0]);
// Send POST data request
URLConnection conn = url.openConnection();
conn.setDoOutput(true);
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write(data);
wr.flush();
// Get the server response
reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
StringBuilder sb = new StringBuilder();
String line = null;
// Read Server Response
while ((line = reader.readLine()) != null) {
// Append server response in string
sb.append(line + "");
}
// Append Server Response To Content String
Content = sb.toString();
} catch (Exception ex) {
Error = ex.getMessage();
} finally {
try {
reader.close();
} catch (Exception ex) {
}
}
/*****************************************************/
return null;
}
protected void onPostExecute(Void unused) {
// NOTE: You can call UI Element here.
// Close progress dialog
Dialog.dismiss();
if (Error != null) {
uiUpdate.setText("Output : " + Error);
} else {
// Show Response Json On Screen (activity)
uiUpdate.setText(Content);
/****************** Start Parse Response JSON Data *************/
String OutputData = "";
JSONObject jsonResponse;
try {
/****** Creates a new JSONObject with name/value mappings from the JSON string. ********/
jsonResponse = new JSONObject(Content);
/***** Returns the value mapped by name if it exists and is a JSONArray. ***/
/******* Returns null otherwise. *******/
JSONArray jsonMainNode = jsonResponse.optJSONArray("posts");
/*********** Process each JSON Node ************/
int lengthJsonArr = jsonMainNode.length();
for (int i = 0; i < lengthJsonArr; i++) {
/****** Get Object for each JSON node.***********/
JSONObject jsonChildNode = jsonMainNode.getJSONObject(i);
/******* Fetch node values **********/
String id = jsonChildNode.optString("id").toString();
String name = jsonChildNode.optString("name").toString();
String pass = jsonChildNode.optString("pass").toString();
String client_type = jsonChildNode.optString("client_type").toString();
Usuario u = new Usuario(id,nome,pass,client_type);
users.add(u);
for (Usuario us : users) {
Log.i("dados WS", us.getNome() + " - " + us.getSenha());
if (us.getName().equalsIgnoreCase(loginloc) && us.getPass().equalsIgnoreCase(senhaloc)) {
Log.i("Mensagem", "OK");
} else {
Log.i("Mensagem", "Username or password wrong!");
}
}
}
/****************** End Parse Response JSON Data *************/
//Show Parsed Output on screen (activity)
jsonParsed.setText(OutputData);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}
}
如果b中存在语法错误，如果我只导入??
，为什么会抛出错误答案 0 :(得分：0)
模块（即：文件）一次性加载，而不是有选择地加载，因为要加载特定的函数/ class / ...，解释器需要解析整个文件，所以语法错误将导致导入失败，如果文件被执行则会发生任何错误。
如果例如在b中你有一个除以零或类似的函数，导致导入失败的原因。
答案 1 :(得分：0)
因为当您导入文件时，编译器会读取正在导入的文件，如果正在导入的文件中有任何错误，编译器将捕获它。 您需要确保您尝试导入的模块中没有错误...