I made a python script that goes throught a sql serve gets presciption records then after cleaning up the data I query it based on two parameters, all of this works by itself but now I wanted to make this into a application that others can interact. So, I tried to make a py-script application.
The problem:
When I try to import the pypyodbc module which is what I use to access the sql server I get an error ValueError: Couldn't find a pure Python 3 wheel for 'pypyodbc'. You can use 'micropip.install(..., keep_going=True)' to get a list of all packages with missing wheels.
To solve this I tried the micropip method and install a pure python library but was not able to.
Here is the code:
<html>
<head>
<!--<link rel="stylesheet" href="https://pyscript.net/alpha/pyscript.css" />-->
<script defer src="https://pyscript.net/alpha/pyscript.js"></script>
<script type="text/javascript">
</script>
</head>
<body>
<py-env>
- pypyodbc
- pandas
</py-env>
<div>Type an sample input here</div>
<input type="text" id="test-input"/>
<input type="text" id="test-input2"/>
<button id="submit-button" type="submit" pys-onClick="my_function">OK</button>
<p id="test-output"></p>
<py-script>
def my_function(*args, **kwargs):
import pypyodbc
import pandas as pd
DRIVER_NAME='SQL SERVER'
SERVER_NAME=''
DATABASE_NAME=''
text = Element('test-input').element.value
text2=Element('test-input2').element.value
connection_string=f"""
DRIVER={{{DRIVER_NAME}}};
SERVER={SERVER_NAME};
DATABASE={DATABASE_NAME};
Trust_Connection=yes;
uid=;
pwd=;
"""
conn = pypyodbc.connect(connection_string)
sql_query="""
SELECT * FROM Visit_Prescription
"""
df_pres=pd.read_sql(sql_query,conn)
DRIVER_NAME='SQL SERVER'
SERVER_NAME=''
DATABASE_NAME=''
connection_string=f"""
DRIVER={{{DRIVER_NAME}}};
SERVER={SERVER_NAME};
DATABASE={DATABASE_NAME};
Trust_Connection=yes;
uid=;
pwd=;
"""
conn = pypyodbc.connect(connection_string)
sql_query="""
SELECT * FROM Visit_Diagnosis
"""
df_Dia=pd.read_sql(sql_query,conn)
df_pres=df_pres.drop(['drug_tradername','drug_form_package', 'scientific_code'], axis=1)
df_pres=df_pres.groupby(['permanent_visit_no','patient_visit_registered_date_time'])['drug_package_information'].apply(','.join).reset_index()
inner = pd.merge(left=df_Dia, right=df_pres, left_on='permanent_visit_no', right_on='permanent_visit_no')
inner=inner.drop(['patient_visit_basic_details_serial_no','permanent_visit_no','patient_visit_registered_date_time_x','diagdate','patient_visit_registered_date_time_y'],axis=1)
inner.drop_duplicates(inplace = True)
inner=inner.drop(['icd_principal_secondary','icd_code_description'],axis=1)
contain_values = inner[inner['icd_code'].str.contains('test-input')]
contain_values=contain_values[contain_values['drug_package_information'].str.contains('test-input2')]
pyscript.write('test-output',contain_values)
</py-script>
</body>
</html>
So, I need help in trying to figure out a way to import the pypyodbc library or even a new library that can access the microsoft sql server. I am very new to this and with pyscript being relatively new I am unable to find much information online. So, any and all help is welcome and much appreciated.
Related
Is it possible to have a user upload an arbitrary Python script (that uses built-ins only, no external packages) and then execute it using PyScript?
You can use an HTML <input> element to upload the file, and use await file.txt() to get the source. Then there are a couple ways to execute the code.
Using Python's exec() method:
<script defer src="https://pyscript.net/releases/2022.12.1/pyscript.js"></script>
<link rel="stylesheet" href="https://pyscript.net/releases/2022.12.1/pyscript.css">
<input type="file" id="file-upload">
<py-script>
import js
from pyodide.ffi.wrappers import add_event_listener
async def upload_and_run(event):
file_list = event.target.files
first_item = file_list.item(0)
src = await first_item.text()
exec(src)
input_elem = js.document.getElementById("file-upload")
add_event_listener(input_elem, "change", upload_and_run);
</py-script>
Or, if you want the script to behave like a <py-script> tag, with pretty error handling and such, you could add source to a new <py-script> tag:
<script defer src="https://pyscript.net/releases/2022.12.1/pyscript.js"></script>
<link rel="stylesheet" href="https://pyscript.net/releases/2022.12.1/pyscript.css">
<input type="file" id="file-upload">
<py-script>
import js
from pyodide.ffi.wrappers import add_event_listener
async def upload_as_script_tag(event):
file_list = event.target.files
first_item = file_list.item(0)
src = await first_item.text()
newTag = js.document.createElement("py-script")
newTag.innerText = src
js.document.body.appendChild(newTag)
input_elem = js.document.getElementById("file-upload")
add_event_listener(input_elem, "change", upload_as_script_tag);
</py-script>
</body>
I have developed a web-based tool, and currently trying to make it python-launchable. I figured using CEFpython is probably the way to do it. I followed the tutorial here and wrote the following code:
from cefpython3 import cefpython as cef
import base64
import platform
import sys
import threading
import os
HTML_code = """
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link href="static/css/main.css" rel="stylesheet" />
</head>
<body>
<div id="UI">
</div>
<div id="container"></div>
<script src="static/main.js"></script>
<script type="text/javascript">
function defineData(datainput){
console.log("start")
data = datainput;
var loc = window.location.pathname;
var dir = loc.substring(0, loc.lastIndexOf('/'));
console.log(loc);
console.log(dir);
Main();
}
</script>
</body>
</html>
"""
def html_to_data_uri(html):
html = html.encode("utf-8", "replace")
b64 = base64.b64encode(html).decode("utf-8", "replace")
ret = "data:text/html;base64,{data}".format(data=b64)
return ret
def main(config):
sys.excepthook = cef.ExceptHook # To shutdown all CEF processes on error
settings = {}
cef.Initialize(settings=settings)
browser = cef.CreateBrowserSync(url=html_to_data_uri(HTML_code),window_title="Test")
browser.SetClientHandler(LoadHandler(config))
cef.MessageLoop()
cef.Shutdown()
return
class LoadHandler(object):
def __init__(self, config):
self.config = config
def OnLoadingStateChange(self, browser, is_loading, **_):
"""Called when the loading state has changed."""
if not is_loading:
# Loading is complete. DOM is ready.
browser.ExecuteFunction("defineData", self.config)
unfortunately, unlike in the tutorial, my tool has to load a local .js file where the main function is defined (), and it seems if I code the html file this way, my working directory is not actually the directory where I call the script, but some strange place
the output of these lines are:
var loc = window.location.pathname;
var dir = loc.substring(0, loc.lastIndexOf('/'));
console.log(loc);
console.log(dir);
output:
text/html;base64,CjwhRE9DVFlQRSBodG1sPgo8aHRtbCBsYW5nPSJlbiI+Cgk8aGVhZD4KCQk8bWV0YSBjaGFyc2V0PSJ1dGYtOCI+CgkJPG1ldGEgbmFtZT0idmlld3BvcnQiIGNvbnRlbnQ9IndpZHRoPWRldmljZS13aWR0aCwgdXNlci1zY2FsYWJsZT1ubywgbWluaW11bS1zY2FsZT0xLjAsIG1heGltdW0tc2NhbGU9MS4wIj4KCQk8bGluayBocmVmPSJzdGF0aWMvY3NzL21haW4uY3NzIiByZWw9InN0eWxlc2hlZXQiIC8+CgkJPHN0eWxlIHR5cGU9InRleHQvY3NzIj4KCQkJKiB7CgkJCQkuYm9yZGV....
text
Could you help me finding the correct way of hard coding html code in python with the correct path? maybe I need to somehow set the path?
PS: I did try including the html code in a separate .html file, and it worked on Windows machines, but it seems MacOS doesn't like it. Since this tutorial did work on MAC, I'm trying to hard code the html part into the python script and hope it would work on both Windows and Mac
Well, the HTML document has been converted to the body of a data URI by html_to_data_uri, so the U[niversal]R[esource]L[ocator] (window.location) of the document isn't a location on a server, but the data URI itself (the "strange place" you mention).
Remember that URLs are a subset of URIs, and you passed the URI as a URL to CEF with:
browser = cef.CreateBrowserSync(url=html_to_data_uri(HTML_code),window_title="Test")
So, as long as you are using a data URI/URL, I don't think that window.location will be helpful. Instead, you could extract the HTML code into a separate .html file, and change that line to:
browser = cef.CreateBrowserSync(url="/path/to/that_html_file.html", window_title="Test")
I'm running a script that shows up some data in python bottle, one of it is signal strength that I'd like to show in real time. When I refresh the page the value doesn't change so I have to rerun the server in order to update that signal strength. I've tried ajax but it seems that it doesn't work.
What should I use to make this to work?
EDIT: The variables are lists that come from another file.
iplist = [192.168.1.1, 192.168.1.2]
hostlist = [android234567, android677896]
maclist = [a1:b2:c3:d4:e5:f6, a1:b2:c3:d4:e5:f6]
signallist = [-56, 23]
.
#app.route('/')
def index():
info={'iplist': iplist, 'maclist': maclist, 'signallist': signallist, 'hostlist': hostlist}
tpl = '''
<!DOCTYPE html>
<html>
<head>
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script type="text/javascript">
function ajax(){
var req = new XMLHttpRequest();
req.onreadystatechange = function(){
if (req.readyState == 4 && req.status == 200) {
document.getElementById('signallist').innerHTML = req.responseText;
}
}
req.open('REQUEST', '../connectedDevices.py', true);
req.send();
}
(function(){ajax();}, 1000);
</script>
</head>
<body onload="ajax();">
<table>
<tr>
<td>IP address</td>
<td>Hostname</td>
<td>MAC address</td>
<td>Signal</td>
</tr>
%for i in range(len(maclist)):
<tr>
<td>{{iplist[i]}}</td>
<td>{{hostlist[i]}}</td>
<td>{{maclist[i]}}</td>
<td id="signallist">{{signallist[i]}}</td>
</tr>
%end
</table>
</body>
</html>
'''
return template(tpl, info)
This prints a chart where it shows Ip, host, mac and signal which the one that I want to get updated in real time.
Bottle caches the templates. So if you are feeding values in during the template creation, it will cache those values.
from bottle import TEMPLATES
TEMPLATES.clear()
Will reset those.
However, you really should think about where your data is coming and leverage websockets. gevent has a great websocket library and works great with bottle to make your code async. With a little work and javascript you can query your api and feed data real time into your code.
I wish to import my own library in Brython. This page of the documentation purports to show how, by adding the appropriate directory to the python path, but I can't make it work because I can't make Brython import sys.
Here's the simplest example code from the first page of the Brython documentation:
<html>
<head>
<script src="../src/Brython3.2.8/brython.js"></script>
</head>
<body onload="brython()">
<script type="text/python">
from browser import document, alert
def echo(ev):
alert(document["zone"].value)
document['mybutton'].bind('click', echo)
</script>
<input id="zone"><button id="mybutton">click !</button>
</body>
</html>
And that works fine.
But if I try to import sys:
<html>
<head>
<script src="../src/Brython3.2.8/brython.js"></script>
</head>
<body onload="brython()">
<script type="text/python">
import sys
from browser import document, alert
def echo(ev):
alert(document["zone"].value)
document['mybutton'].bind('click', echo)
</script>
<input id="zone"><button id="mybutton">click !</button>
</body>
</html>
Then the html will display but the button will not do anything.
The Console on Chrome shows the following error:
brython.js:6929 XMLHttpRequest cannot load file:///C:/Users/XXXXXXXXX/XXXXXX/src/Brython3.2.8/Lib/sys.py?v=1476283159509. Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https, chrome-extension-resource.
$download_module # brython.js.6929
import_py # brython.js.6929
exec_module # brython.js.6929
etc etc
So, how can I import sys in brython, and/or how can I import my own library in python?
Thanks.
You need to include brython_stdlib.js in your html code. So your html should look like this:
<html>
<head>
<script src="../src/Brython3.2.8/brython.js"></script>
<script src="../src/Brython3.2.8/brython_stdlib.js"></script>
</head>
<body onload="brython()">
<script type="text/python">
import sys
from browser import document, alert
def echo(ev):
alert(document["zone"].value)
document['mybutton'].bind('click', echo)
</script>
<input id="zone"><button id="mybutton">click !</button>
</body>
</html>
Source Code : https://github.com/imvickykumar999/Brython/blob/master/index.html#L36
Deployed Code : https://imvickykumar999.github.io/Brython/
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Brython</title>
<script
type="text/javascript"
src="https://cdn.jsdelivr.net/npm/brython#3.8.9/brython.min.js">
</script>
<script
type="text/javascript"
src="https://cdn.jsdelivr.net/npm/brython#3.8.9/brython_stdlib.js">
</script>
<link
rel="stylesheet"
href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css"
integrity="sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk"
crossorigin="anonymous">
</head>
<body onload="brython()">
<style>
body {
/* background-color: yellow; */
background-image: url(https://images.unsplash.com/photo-1573196872258-41425124bf5d?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1050&q=80);
/* background-repeat: no-repeat; */
}
</style>
<script type="text/python">
from browser import document
def calc(a, b, o):
d = { '+' : a+b,
'-' : a-b,
'*' : a*b,
'/' : a/b,
'%' : a%b
}
return f"({a}{o}{b})=({d[o]})"
a = float(input('Enter first number : '))
b = float(input('Enter second number : '))
o = input('Enter the Operator (+,-,*,/,%) : ')
document <= calc(a, b, o)
</script>
</body>
</html>
Brython cannot import from any Python package that is part of any Python installation on the user's computer. It works by transpiling to JavaScript and running in the browser's Javascript engine. It has no knowledge of any local Python installations, and does not require any such installations to exist.
To use Python's standard library
Add a script tag to include brython_stdlib.js as well as the base brython.js. Several CDNs provide this already.
The Brython implementation of the Python standard library does not match the reference implementation exactly. See the documentation for details on what is included and how it is organized.
Importing your own code from within the document
For organizational purposes, Python code within the HTML document can be split across multiple <script> tags. The id attribute for the tag gives a "module name" that can be used in import statements in other scripts, as long as that script has already executed. The documentation includes an example:
<script type="text/python" id="module">
def hello():
return "world"
</script>
<script type="text/python">
from browser import document
import module
document.body <= module.hello()
</script>
The browser will have loaded the first <script> tag first, creating a (JavaScript representation of) a Python module named module that contains the hello function. The second script tag will be able to import that module and use the function as usual in Python.
Importing your own code from the server
Make the files available in the appropriate place as described in the documentation. Brython's implementation of the import statement (equivalently, __import__ builtin function) will attempt to find the code on the server using AJAX.
Importing your own code as a compiled Brython package
As explained in the documentation, use the Brython package (pip install brython) to create a JavaScript file that represents the Python code. (For third-party libraries, also check if such a JavaScript file is already available from a CDN.)
Suppose we have a project that creates a package named example. Navigate to the folder that contains that package (either src or the project folder, according to how the project is organized), then run brython-cli make_package example.
This should generate a example.brython.js file. Put it somewhere on the server, and configure the server to host that file at a specific URL. Then add the corresponding tag to the client page source (or the template that generates that page).
After that it should be possible to import example, from example import ... etc. in the Brython code.
Alternately, use brython-cli modules, as described in the 'Optimization' section, to create a combined library JavaScript file representing the entire server-side part of the project.
I'm trying to get a HTML Gui on my simple SL4A Python app. the only thing I need to perform is ask the user for 1 input string at the start of my app.
For debugging purposes I started of simple. Unfortunately even this won't function.
Any idea's what's wrong here? (I've tried several pieces of code like this and all have the same issue)
Python code:
import android
loop = True
droid = android.Android()
droid.webViewShow('/sdcard/sl4a/scripts/screen.html')
while loop:
res = droid.waitForEvent('data')
if res:
print str(res)
HTML code
<html>
<head>
<script>
var droid = new Android();
var fiets = function() {
droid.postEvent("data", document.getElementById("gsm").value);
}
</script>
</head>
<body onload:"fiets()">
<form onsubmit="fiets(); return false;">
<label for="say">What would you like to say?</label>
<input type="text" id="gsm" value="99999999" />
<input type="submit" value="Store" />
</form>
</body>
</html>
the error message is repeatedly (the number 3114 is incremental):
java.lang.NullPointerException
Result(id=3114, result=None, error=u'java.lang.NullPointerException')
update:
http://www.mithril.com.au/android/doc/EventFacade.html
As we go I read waitForEvent is deprecated in r4. I should use eventWaitFor instead.
This takes the error away but doesn't make the example function. Python script prints nothing.
update2:
droid.postEvent should become droid.eventPost
droid.waitForEvent('data') should become droid.waitForEvent('data')
In javascript and python.
Problem Solved