Oct-01-2019, 05:00 PM
In this exercise, I am using a python webserver to change the parameters' values inside my configuration file (.ini file). To do that I have a few widgets (roundsliders) that I am using to change the values of the parameters. So, once I call/import the file then start dragging the sliders and hit submit then the values should change based on the values I assigned.
The error I am facing with now is with changing the value of parameter # 1. It tells me that "object has no attribute 'change_param_1".
Any idea on how to solve this problem!
Also, if you think there is an easier approach to edit the params values then I would appreciate your suggestions.
python code:
![[Image: uuC0h7.png]](https://imagizer.imageshack.com/img923/6783/uuC0h7.png)
The error I am facing with now is with changing the value of parameter # 1. It tells me that "object has no attribute 'change_param_1".
Any idea on how to solve this problem!
Also, if you think there is an easier approach to edit the params values then I would appreciate your suggestions.
python code:
from __future__ import print_function
from gnuradio import blocks
from gnuradio import eng_notation
from gnuradio import gr
from gnuradio.eng_option import eng_option
from gnuradio.filter import firdes
from optparse import OptionParser
import time
from flask import Flask, flash, request, redirect, jsonify, render_template_string, g, current_app
import ConfigParser
config = ConfigParser.RawConfigParser()
config.add_section('Params')
class Top_Block(gr.top_block):
def __init__(self):
gr.top_block.__init__(self, "Top Block 22")
def getfile(self, filename, param_1=0, param_2=0, param_3=0):
self.param_1 = param_1
print('[Top_Block] __init__: param_1:', self.param_1)
self.param_2 = param_2
print('[Top_Block] __init__: param_2:', self.param_2)
self.param_3 = param_3
print('[Top_Block] __init__: param_3:', self.param_3)
with open(filename, 'wb') as configfile:
config.write(configfile)
def change_param_1(self, value=None):
if value is not None:
self.param_1 = value
print('[Top_Block] change: param_1:', value)
config.set_param_1('Params', 'param_1', value)
def change_param_2(self, value=None):
if value is not None:
self.param_2 = value
print('[Top_Block] change: param_2:', value)
config.set('Params', 'param_2', value)
def change_param_3(self, value=None):
if value is not None:
self.param_3 = value
print('[Top_Block] change: param_3:', value)
config.set('Params', 'param_3', value)
def change(self, param_1=None, param_2=None, param_3=None):
self.change_param_1(param_1)
self.change_param_2(param_2)
self.change_param_3(param_3)
def turn_off(self):
self.change(0, 0, 0)
#===============================================================
app = Flask(__name__)
@app.route("/")
def index():
current_app.tb = Top_Block()
current_app.tb.start()
args_filename = request.args.get('filename', '')
#
return render_template_string('''<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Project</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/roundSlider/1.3.2/roundslider.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/roundSlider/1.3.2/roundslider.min.js"></script>
<style type="text/css">
form {
display: flex;
top: 5px;
margin:20px;
border-width: 2px;
border-bottom-color:#3300ff;
border-bottom-style: solid;
width: 1900px;
border: 5px solid green;
border-radius: .5em;
padding: 5px;
align-items: center;
}
</style>
<h1>
<form action="getfile" method="POST" enctype="multipart/form-data">
<font size="10"><pre class="tab"> Import INI File: </pre></font>
<input type="file" name="file">
<input type="submit" value="Submit">
</form>
<style>
.container {
display: flex;
}
.child
{
margin-left:100px;
}
</style>
<body>
<div class="container">
<div class="child">
<div id="slider1" class='slider row1 col1'></div>
<center>
<p>param_1</p>
</center>
</div>
<div class="child">
<div id="slider2" class='slider row1 col2'></div>
<center>
<p>param_2</p>
</center>
</div>
<div class="child">
<div id="slider3" class='slider row1 col3'></div>
<center>
<p>param_3</p>
</center>
</div>
</div>
<script>
// create sliders
$("#slider1").roundSlider({
sliderType: "min-range",
radius: 150,
min: 0,
max: 10000000000,
value: 0, // default value at start
//change: function(event) { $.getJSON('/valueofslider', {slide1_val: event.value}); }
change: function(event) {
$.getJSON('/set_param_1/' + event.value);
}
});
$("#slider2").roundSlider({
sliderType: "min-range",
radius: 150,
min: 0,
max: 10000000000,
value: 0, // default value at start
//change: function(event) { $.getJSON('/valueofslider', {slide2_val: event.value}); }
change: function(event) {
$.getJSON('/set_param_2/' + event.value);
}
});
$("#slider3").roundSlider({
sliderType: "min-range",
radius: 150,
min: 0,
max: 10000000000,
value: 0, // default value at start
//change: function(event) { $.getJSON('/valueofslider', {slide3_val: event.value}); }
change: function(event) {
$.getJSON('/set_param_3/' + event.value);
}
});
</script>
</body>
</html>''', filename=args_filename)
@app.route('/getfile', methods=['GET','POST'])
def getfile():
result = request.files.get('file')
print('[/getfile] result:', result.filename)
if result:
result.save(result.filename)
current_app.tb.getfile(result.filename)
return redirect('/')
@app.route('/off')
def off():
current_app.tb.turn_off()
return 'off'
@app.route('/set_param_1/<int:value>')
def set_param_1(value):
current_app.tb.change_param_1(value)
return str(value)
@app.route('/set_param_2/<int:value>')
def set_param_2(value):
current_app.tb.change_param_2(value)
return str(value)
@app.route('/set_param_3/<int:value>')
def set_param_3(value):
current_app.tb.change_param_3(value)
return str(value)
@app.route('/valueofslider')
def slide():
param_1 = request.args.get('slide1_val', None)
param_2 = request.args.get('slide2_val', None)
param_3 = request.args.get('slide3_val', None)
return 'param_1: {}, param_2: {}, param_3: {}'.format(param_1, param_2, param_3)
def main():
app.run(host='0.0.0.0', debug=True)
if __name__ == '__main__':
main()Traceback:* Serving Flask app "writeToConfigFile" (lazy loading)
* Environment: production
WARNING: This is a development server. Do not use it in a production deployment.
Use a production WSGI server instead.
* Debug mode: on
* Running on http://0.0.0.0:5000/ (Press CTRL+C to quit)
* Restarting with stat
* Debugger is active!
* Debugger PIN: 138-727-058
127.0.0.1 - - [01/Oct/2019 11:16:22] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [01/Oct/2019 11:16:23] "GET /set_param_1/719618996 HTTP/1.1" 500 -
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 2463, in __call__
return self.wsgi_app(environ, start_response)
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 2449, in wsgi_app
response = self.handle_exception(e)
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1866, in handle_exception
reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 2446, in wsgi_app
response = self.full_dispatch_request()
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1951, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1820, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1949, in full_dispatch_request
rv = self.dispatch_request()
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1935, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/home/fit-pc/Desktop/random exercises/INI/writeToConfigFile.py", line 235, in set_param_1
current_app.tb.change_param_1(value)
File "/usr/lib/python2.7/dist-packages/gnuradio/gr/hier_block2.py", line 92, in __getattr__
return getattr(self._impl, name)
AttributeError: 'top_block_sptr' object has no attribute 'change_param_1'Location of error: