{"id":7454,"date":"2020-09-28T15:13:34","date_gmt":"2020-09-28T13:13:34","guid":{"rendered":"https:\/\/pythonprogramming.altervista.org\/?p=7454"},"modified":"2020-09-28T18:12:57","modified_gmt":"2020-09-28T16:12:57","slug":"python-math-3-random-exercizes-on-proportions","status":"publish","type":"post","link":"https:\/\/pythonprogramming.altervista.org\/python-math-3-random-exercizes-on-proportions\/","title":{"rendered":"Python math 3 &#8211; random exercizes on proportions"},"content":{"rendered":"<p>Index<\/p>\n<ul>\n<li>part 1 &#8211; <a href=\"https:\/\/pythonprogramming.altervista.org\/solve-a-proportion-with-python-teach-math-with-python-1\/\">proportions<\/a><\/li>\n<li>part 2 &#8211; <a href=\"https:\/\/pythonprogramming.altervista.org\/python-math-2-percent\/\">percentage<\/a><\/li>\n<\/ul>\n<p>A method in the class to make random exercizes. The github <a href=\"https:\/\/github.com\/formazione\/python_math\">repository<\/a>:<\/p>\n<p><iframe loading=\"lazy\" title=\"Python math 3 - Random proportion exercizes\" width=\"747\" height=\"560\" src=\"https:\/\/www.youtube.com\/embed\/roqtCCDUQX0?feature=oembed&amp;enablejsapi=1\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<h2>The code<\/h2>\n<pre class=\"lang:default decode:true\"># python_math 1\r\n# proportions\r\nimport random\r\nimport os\r\n\r\nclass Prop:\r\n    def __init__(self, prop):\r\n        '''This is how you put the argument e1 : e2 = m1 : m2 \r\n        ie: 12 : 3 = 36:9\r\n        '''\r\n        print(prop)\r\n        self.proportion = prop\r\n        # replace = with :\r\n        prop = prop.replace(\"=\", \":\")\r\n        # create a list with the numbers, splitting by the ':'\r\n        self.prop = prop.split(\":\")\r\n        # converts strings into integers and x to None\r\n        for n, x in enumerate(self.prop):\r\n            if x.strip() == \"x\":\r\n                self.prop[n] = None\r\n            else:\r\n                self.prop[n] = int(x)\r\n        # memorize in memorable names the extrem and medium terms\r\n        e1, m1, m2, e2 = self.prop\r\n        self.e1 = e1\r\n        self.e2 = e2\r\n        self.m1 = m1\r\n        self.m2 = m2\r\n        self.cnt = 1\r\n        self.calculate_x()\r\n\r\n    def calculate_x(self):\r\n        \"Call this from the istance to find the incognito\"\r\n        # Depending on what is None (incognito), it finds it with the other 3\r\n        if self.e1 is None:\r\n            res = self.m1 * self.m2 \/ self.e2\r\n        elif self.e2 is None:\r\n            res = self.m1 * self.m2 \/ self.e1\r\n        elif self.m1 is None:\r\n            res = self.e1 * self.e2 \/ self.m2\r\n        elif self.m2 is None:\r\n            res = self.e1 * self.e2 \/ self.m1\r\n        print(f\"x = {res}\\n\")\r\n        return res\r\n\r\n    def exercize(self, number, solution=1):\r\n        self.text = \"\"\r\n        self.text_sol = \"\"\r\n        for i in range(number):\r\n            print(\"Exercize n.\" + str(self.cnt))\r\n            self.ratio = random.randrange(2, 8)\r\n            self.rm1 = random.randrange(100, 1000)\r\n            self.re1 = self.rm1 * self.ratio\r\n            self.rel = random.randrange(9, 14)\r\n            self.re2 = self.rm1 * self.rel\r\n            self.rm2 = self.re2 * self.ratio\r\n            self.list = [self.re1, self.rm1, self.rm2, self.re2]\r\n            print(self.list)\r\n            index = random.randrange(0, 3)\r\n            self.sol = self.list[index]\r\n            self.list[index] = \"x\"\r\n            a, b, c, d = [str(x) for x in self.list]\r\n            pstring = \"\".join([a, \" : \", b, \" = \", c, \" : \", d])\r\n            print(pstring)\r\n            if solution:\r\n                print(self.sol)\r\n            else:\r\n                print(\"Solution: __________________ = _____\")\r\n            print(\"======================\")\r\n            self.cnt += 1\r\n            self.text += str(self.cnt - 1) + \") \" + pstring\r\n            self.text += \"   Sol.: ______________________ = __________\\n\"\r\n            self.text_sol += str(self.cnt - 1) + \") \" + pstring + \" - Sol:\" + str(self.sol) + \"\\n\"\r\n\r\n    def print_exercizes(self):\r\n        with open(\"esercizi.txt\", \"w\") as file:\r\n            file.write(self.text)\r\n        os.startfile(\"esercizi.txt\")\r\n        with open(\"esercizi_sol.txt\", \"w\") as file:\r\n            file.write(self.text_sol)\r\n        os.startfile(\"esercizi_sol.txt\")\r\n\r\n\r\n\r\nif __name__ == \"__main__\":\r\n\r\n    p1 = Prop(\"12 : 3 = 36 : x\")\r\n    p1.exercize(10, solution=0)\r\n    p1.print_exercizes()\r\n\r\n<\/pre>\n<h2>Example of output<\/h2>\n<pre class=\"lang:default decode:true \">12 : 3 = 36 : x\r\nx = 9.0\r\n\r\nExercize n.1\r\n[2736, 684, 30096, 7524]\r\nx : 684 = 30096 : 7524\r\nSolution: __________________ = _____\r\n======================\r\nExercize n.2\r\n[2826, 471, 28260, 4710]\r\n2826 : 471 = x : 4710\r\nSolution: __________________ = _____\r\n======================\r\nExercize n.3\r\n[1856, 464, 20416, 5104]\r\n1856 : x = 20416 : 5104\r\nSolution: __________________ = _____\r\n======================\r\nExercize n.4\r\n[4965, 993, 59580, 11916]\r\nx : 993 = 59580 : 11916\r\nSolution: __________________ = _____\r\n======================\r\nExercize n.5\r\n[5460, 780, 54600, 7800]\r\nx : 780 = 54600 : 7800\r\nSolution: __________________ = _____\r\n======================\r\nExercize n.6\r\n[2898, 414, 31878, 4554]\r\nx : 414 = 31878 : 4554\r\nSolution: __________________ = _____\r\n======================\r\nExercize n.7\r\n[1422, 711, 15642, 7821]\r\nx : 711 = 15642 : 7821\r\nSolution: __________________ = _____\r\n======================\r\nExercize n.8\r\n[5768, 824, 74984, 10712]\r\n5768 : 824 = x : 10712\r\nSolution: __________________ = _____\r\n======================\r\nExercize n.9\r\n[902, 451, 8118, 4059]\r\nx : 451 = 8118 : 4059\r\nSolution: __________________ = _____\r\n======================\r\nExercize n.10\r\n[2934, 489, 35208, 5868]\r\nx : 489 = 35208 : 5868\r\nSolution: __________________ = _____\r\n======================<\/pre>\n<p>&nbsp;<\/p>\n<!-- se vuoi mettere un testo scorrevole\r\n[hoops name=\"typeWriterGen\"]\r\n\r\npoi metti un id diverso per ogni testo nella stessa pagina\r\n\r\n<div id=\"div01\">\r\n<script>\r\n\r\ntypeWriterGen(\"div01\",\"Esempio di testo scorrevole\");\r\n<\/script>\r\n\r\n-->\r\n<style>\r\n.avatar {\r\n  vertical-align: middle;\r\n  width: 100px;\r\n  height: 100px;\r\n  border-radius: 50%;\r\n}\r\n<\/style>\r\n\r\n<hr>\r\n\r\n<!-- NEWSLETTER LINK -->\r\n<a href=\"https:\/\/docs.google.com\/forms\/d\/e\/1FAIpQLSf7TniIPCWHDzCSGh2dYZaCwDvi9yLKS5ovFdKuK1sdfOvwEg\/viewform\">\r\n<img decoding=\"async\" src=\"https:\/\/pythonprogramming.altervista.org\/wp-content\/uploads\/2023\/08\/image-13.png\" class=\"avatar\">\r\nSubscribe to the <b>newsletter<\/b> for updates<\/a><br>\r\n\r\n<!-- TKINTER TEMPLATE LINK -->\r\n<a href=\"https:\/\/pythonprogramming.altervista.org\/tkinter-templates\/\">\r\n<img decoding=\"async\" src=\"https:\/\/i0.wp.com\/pythonprogramming.altervista.org\/wp-content\/uploads\/2023\/07\/image-26.png\" class=\"avatar\">\r\nTkinter templates<\/a><br>\r\n\r\n<!-- MY AVATAR PUT A LINK TO YOUTUBE CHANNEL-->\r\n<iframe loading=\"lazy\" frameborder=\"0\" src=\"https:\/\/itch.io\/embed\/711828\" width=\"552\" height=\"167\"><a href=\"https:\/\/pythonprogrammi.itch.io\/pysnake\">PySnake by PythonProgrammi<\/a><\/iframe>\r\n<br>\r\n<style>\r\n.avatar {\r\n  vertical-align: middle;\r\n  width: 100px;\r\n  height: 100px;\r\n  border-radius: 50%;\r\n}\r\n<\/style>\r\n\r\n\r\n<a href=\"https:\/\/www.youtube.com\/channel\/UCzbxq5e9gLiY-je2-br1rvg\">\r\n\t<img decoding=\"async\" src=\"https:\/\/pythonprogramming.altervista.org\/wp-content\/uploads\/2020\/10\/avatar64x64.png\" alt=\"Avatar\" class=\"avatar\">\r\n\t My youtube channel<\/a><br>\r\n\r\n<br>\r\n\r\nTwitter: <a href=\"https:\/\/twitter.com\/pythonprogrammi\">@pythonprogrammi - 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+= `<span style=\"font-size:8px\">Powered by <a href=\"https:\/\/pythonprogramming.altervista.org\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2673\" src=\"https:\/\/pythonprogramming.altervista.org\/wp-content\/uploads\/2019\/06\/altervista2.png\" alt=\"\" width=\"70\" height=\"25\" srcset=\"https:\/\/pythonprogramming.altervista.org\/wp-content\/uploads\/2019\/06\/altervista2.png 156w, https:\/\/pythonprogramming.altervista.org\/wp-content\/uploads\/2019\/06\/altervista2-150x56.png 150w\" sizes=\"auto, (max-width: 70px) 100vw, 70px\" \/>pythonprogramming.altervista.org<\/a><\/span>`\r\n\thtml = \"<div style='background:yellow'>\" + html + \"<\/div>\";\r\n\tdocument.write(html)\r\n<\/script>\n","protected":false},"excerpt":{"rendered":"Python math 3 &#8211; Create random exercizes\n<a class=\"moretag\" href=\"https:\/\/pythonprogramming.altervista.org\/python-math-3-random-exercizes-on-proportions\/\"> 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