add flask cache

.gitignore

@@ -136,6 +136,7 @@ crawler/common
 
 # for jetbrain
 */*.iml
+*.iml
 
 # for other
 */winn/*

java/leetcode/src/main/java/com/wxnacy/leetcode/App.java

@@ -1,5 +1,10 @@
 package com.wxnacy.leetcode;
 
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
 /**
  * Hello world!
  *
@@ -9,5 +14,22 @@ public class App
     public static void main( String[] args )
     {
         System.out.println( "Hello World!" );
+        int[] a = {1, 2, 3};
+        int[] b = {1, 2, 3};
+        boolean flag = a.equals(b);
+        System.out.println(flag);
+        System.out.println(Arrays.equals(a, b));
+        a = new int[]{1, 3};
+
+        HashMap<Integer, Integer> m = new HashMap<>();
+        m.put(1, 1);
+        m.put(2, 1);
+        Set<Map.Entry<Integer, Integer>> sets = m.entrySet();
+
+        for (Map.Entry<Integer, Integer> set : sets) {
+
+            System.out.println(set.getKey() + set.getValue());
+        }
     }
+
 }

java/leetcode/src/test/java/com/wxnacy/leetcode/AppTest.java

@@ -4,6 +4,8 @@
 
 import org.junit.Test;
 
+import java.util.Arrays;
+
 /**
  * Unit test for simple App.
  */
@@ -16,5 +18,11 @@ public class AppTest
     public void shouldAnswerWithTrue()
     {
         assertTrue( true );
+
+        int[] a = {1, 2, 3};
+        Arrays.fill(a, 6);
+        for(int item: a) {
+            System.out.println(item);
+        }
     }
 }

java/leetcode/src/test/java/com/wxnacy/leetcode/SingleNumberTest.java

@@ -4,6 +4,12 @@
 
 import org.junit.Test;
 
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
+
+
 /**
  * 只出现一次的数字
  * 本题分析文章详见 https://wxnacy.com/leetcode/problems/136-single-number/
@@ -15,8 +21,15 @@ public void shouldAnswerWithTrue()
     {
         int[] nums = {4, 1, 2, 1, 2};
         assertEquals(singleNumber(nums), 4);
-        int[] nums = {2, 2, 1};
-        assertEquals(singleNumber(nums), 1);
+
+        Map<Integer, int[]> m = new HashMap();
+        m.put(1, new int[]{2, 2, 1});
+        m.put(4, new int[]{4, 1, 2, 1, 2});
+        Set<Map.Entry<Integer, int[]>> sets = m.entrySet();
+        for (Map.Entry<Integer, int[]> set : sets) {
+            Integer n = singleNumber(set.getValue());
+            assertEquals(set.getKey(), n);
+        }
 
     }
 

java/leetcode/src/test/java/com/wxnacy/leetcode/TwoSumTest.java

@@ -0,0 +1,39 @@
+package com.wxnacy.leetcode;
+
+import org.junit.Test;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+import static org.junit.Assert.*;
+
+
+/**
+ * 只出现一次的数字
+ * 本题分析文章详见 https://wxnacy.com/leetcode/problems/136-single-number/
+ */
+public class TwoSumTest
+{
+    @Test
+    public void shouldAnswerWithTrue()
+    {
+        assertArrayEquals(twoSum(new int[]{2, 7, 9}, 9), new int[]{0, 1});
+    }
+
+    /**
+     * 一遍哈希表
+     * 执行用时 : 6 ms, 在Two Sum的Java提交中击败了94.56% 的用户
+     * 内存消耗 : 37.9 MB, 在Two Sum的Java提交中击败了80.11% 的用户
+     */
+    public int[] twoSum(int[] nums, int target) {
+        HashMap<Integer, Integer> m = new HashMap<>();
+        for (int i = 0; i < nums.length; i++) {
+            if (m.containsKey(target - nums[i])) {
+                return new int[]{m.get(target - nums[i]), i};
+            }
+            m.put(nums[i], i);
+        }
+        return new int[]{0, 0};
+    }
+}

java/simple/ArrayTest.java

@@ -0,0 +1,10 @@
+public class ArrayTest{
+    public static void main(String args[]){
+        System.out.println("Hello World");
+        int[] a = new int[]{1, 2, 3};
+        // System.out.println(a);
+        int[] b = {1, 2, 3};
+        int[] c = new int[4];
+        c[0] = 3;
+    }
+}

python/flask_cache_demo/filesystem.py

@@ -0,0 +1,35 @@
+#!/usr/bin/env python
+# -*- coding:utf-8 -*-
+# Author: wxnacy([email protected])
+# Description: 使用文件系统来存储缓存值
+# http://www.pythondoc.com/flask-cache/index.html
+'''
+FileSystemCache – filesystem
+使用文件系统来存储缓存值
+
+CACHE_DEFAULT_TIMEOUT
+CACHE_DIR
+CACHE_THRESHOLD
+CACHE_ARGS
+CACHE_OPTIONS
+'''
+
+from flask import Flask
+from flask import jsonify
+from flask_caching import Cache
+import random
+
+app = Flask(__name__)
+cache = Cache(app, config={
+    "CACHE_TYPE": "filesystem",
+    "CACHE_DIR": "/Users/wxnacy/Downloads/cache"
+})
+
+@app.route('/filesystem')
+@cache.cached(timeout=10)
+def filesystem():
+    return jsonify({"num": random.randint(1, 100)})
+
+if __name__ == "__main__":
+    app.run(debug=True)
+

python/flask_cache_demo/redis_cache.py

@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+# -*- coding:utf-8 -*-
+# Author: wxnacy([email protected])
+# Description: 使用 redis 做缓存
+# http://www.pythondoc.com/flask-cache/index.html
+'''
+RedisCache – redis
+
+相关配置
+
+    CACHE_DEFAULT_TIMEOUT
+    CACHE_KEY_PREFIX
+    CACHE_REDIS_HOST
+    CACHE_REDIS_PORT
+    CACHE_REDIS_PASSWORD
+    CACHE_REDIS_DB
+    CACHE_ARGS
+    CACHE_OPTIONS
+    CACHE_REDIS_URL
+
+不配置 CACHE_KEY_PREFIX 和 key_prefix 时，默认 key 为 flask_cache_view/{route}
+
+'''
+
+from flask import Flask
+from flask import jsonify
+from flask import request
+from flask_caching import Cache
+import random
+
+app = Flask(__name__)
+cache = Cache(app, config={
+    "CACHE_TYPE": "redis",
+    "CACHE_REDIS_URL": "redis://localhost:6379/0",  # redis 地址
+    "CACHE_DEFAULT_TIMEOUT": 10,                    # 全局过期时间
+    # key 前缀，key 为 redis_cache_view/{route}
+    "CACHE_KEY_PREFIX": "redis_cache_",
+})
+
+@app.route('/redis1')
+@cache.cached()
+def redis1():
+    '''
+    key=redis_cache_view//redis1
+    '''
+    return jsonify({"num": random.randint(1, 100)})
+
+@app.route('/redis2')
+@cache.cached(timeout = 20, key_prefix='customize')
+def redis2():
+    '''
+    自定义过期时间 20
+    key=redis_cache_customize
+    '''
+    return jsonify({"num": random.randint(1, 100)})
+
+def make_cache_key():
+    path = request.path
+    key = str(hash(request.args))
+    return f'{path}-{key}'
+
+
+@app.route('/redis3')
+@cache.cached(timeout = 20, key_prefix=make_cache_key)
+def redis3():
+    '''
+    自定义 key
+    key=redis_cache_/redis3-133156838395276
+    '''
+    return jsonify({"num": random.randint(1, 100)})
+if __name__ == "__main__":
+    app.run(debug=True)
+

python/flask_cache_demo/simple.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+# -*- coding:utf-8 -*-
+# Author: wxnacy([email protected])
+# Description: 使用本地Python字典缓存。这不是真正的线程安全。
+# http://www.pythondoc.com/flask-cache/index.html
+'''
+SimpleCache – simple
+使用本地Python字典缓存。这不是真正的线程安全。
+
+相关配置
+
+CACHE_DEFAULT_TIMEOUT
+CACHE_THRESHOLD
+CACHE_ARGS
+CACHE_OPTIONS
+'''
+
+from flask import Flask
+from flask import jsonify
+from flask_caching import Cache
+import random
+
+app = Flask(__name__)
+cache = Cache(app, config={"CACHE_TYPE": "simple"})
+
+@app.route('/simple')
+@cache.cached(timeout=10)
+def simple():
+    return jsonify({"num": random.randint(1, 100)})
+
+if __name__ == "__main__":
+    app.run(debug=True)
+

python/leetcode/15-3sum.py

@@ -19,12 +19,26 @@
 '''
 
 class Solution:
+    def twoSum(self, nums, target):
+        m = {}
+        for i in range(len(nums)):
+            n = target - nums[i]
+            if n in m:
+                return [m[n], i]
+            m[nums[i]] = i
+        return [-1, -1]
+
     def threeSum(self, nums: 'List[int]') -> 'List[List[int]]':
         res = []
-        for n in nums:
-
-
-        pass
+        for i in range(len(nums) - 2):
+            target = 0 - nums[i]
+            i1, i2 = self.twoSum(nums[i + 1:], target)
+            if i1 > -1:
+                i1 += i + 1
+                i2 += i + 1
+                print(i, i1, i2)
+                res.append([nums[i], nums[i1], nums[i2]])
+        return res
 
 import unittest
 
@@ -43,16 +57,16 @@ def tearDown(self):
     def do(self, func):
         nums = [-1, 0, 1, 2, -1, -4]
         res = [ [-1, 0, 1], [-1, -1, 2] ]
-        self.assertEqual(nums, res)
-        nums = [-1, 0, 1]
-        res = [ [-1, 0, 1]]
-        self.assertEqual(nums, res)
-        nums = [-1, 0]
-        res = [[]]
-        self.assertEqual(nums, res)
-        nums = [-1, 0, 1, -1, 0, 1]
-        res = [ [-1, 0, 1]]
-        self.assertEqual(nums, res)
+        self.assertEqual(func(nums), res)
+        #  nums = [-1, 0, 1]
+        #  res = [ [-1, 0, 1]]
+        #  self.assertEqual(func(nums), res)
+        #  nums = [-1, 0]
+        #  res = [[]]
+        #  self.assertEqual(nums, res)
+        #  nums = [-1, 0, 1, -1, 0, 1]
+        #  res = [ [-1, 0, 1]]
+        #  self.assertEqual(func(nums), res)
 
     def test_func(self):
         self.do(s.threeSum)

python/office_demo/records_demo.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+# -*- coding:utf-8 -*-
+# Author: wxnacy([email protected])
+# Description:
+
+import records
+
+db = records.Database('mysql+pymysql://root:[email protected]:3306/study?charset=utf8mb4')
+
+rows = db.query('select * from user')
+print(rows.dataset)
+print(rows.first())
+
+#  with open('/tmp/report.xls', 'wb') as f:
+    #  f.write(rows.export('xls'))