[Python] denied access to com port 5

I am trying to write a python script that receives serial input from an Arduino (with servo and ultrasonic sensor) on com5 to plot a radar like graph. I have done everything I have found on forums making sure (the best I can) that nothing else like Arduino IDE is using the port (the serial monitor is closed) I've tried running it as administrator, I have restarted the computer. I have unistalled and reinstalled pyserial.

No Matter what i get this error:

serial.serialutil.SerialException: could not open port 'COM5': PermissionError(13, 'Access is denied.', None, 5)


My Python code is:

from matplotlib import pyplot as plt
import matplotlib
matplotlib.use('TkAgg')
import numpy as np
import time
import serial
import keyboard

ser = serial.Serial('COM5', baudrate=9600, bytesize=8, parity='N', stopbits=1, timeout=2)

# setup the basic display window
fig = plt.figure(facecolor='k')
fig.canvas.toolbar.pack_forget()
fig.canvas.manager.set_window_title('Radar')
mng = plt.get_current_fig_manager()
mng.window.state('zoomed')

#setup the sub plot (the radar screen)
ax = fig.add_subplot(1,1,1, polar=True, facecolor='green')
ax.tick_params(axis='both', colors='white' )
ax.xaxis.grid(True, color='grey', linestyle='--')
ax.yaxis.grid(True, color='grey', linestyle='--')
rmax = 100
ax.set_ylim([0.0, rmax])
ax.set_xlim([0.0, np.pi])
ax.set_position([0.1, 0.1, 0.8, 0.8 ])
ax.set_rticks(np.linspace(0.0, rmax, 5))
ax.set_rlabel_position(0)
ax.set_thetagrids(np.linspace(0.0, 360, 17))

angles = np.arange(0, 360, 1)

#convert angles to radians
theta = angles * (np.pi / 180)

pols = ax.plot([], linestyle='', marker='o', markerfacecolor='r', markeredgecolor='w',
markeredgewidth=1.0, markersize=3.0, alpha=0.5)
line1 = ax.plot([], color='w', linewidth=3.0)

fig.canvas.draw()
dists = np.ones((len(angles),))
axbbackground = fig.canvas.copy_from_bbox(ax.bbox)

while True:

try:
data = ser.readline()
decoded = data.decode()
data = (decoded.replace('\r','')).replace('\n','')
#split data values (one distance, one angle) where there is a comma
vals = [float(ii) for ii in data.split(',')]
#check that there is in fact 2 values and it doesnt try plot an incomplete graph
if len(vals) < 2:
continue
angle, dist = vals
# can test working by adding
#print(angle, dist)

#Create all angles into a list to plot all at once
dists[int(angle)] = dist

pols.set_data(theta, dists)
#plot background
fig.canvas.restore_region(axbbackground)
ax.draw_artist(pols)

#create sweeping line
line1.set_data(np.repeat((angle*(np.pi/180)), 2),np.linspace(0.0, r_max, 2))
ax.draw_artist(line1)
fig.canvas.blit(ax.bbox)
fig.canvas.flush_events()

if keyboard.is_pressed('q'):
plt.close('all')
print('User to quit the application')
break

except KeyboardInterrupt:
plt.close('all')
ser.close() # Always close the port after usage
print("Keyboard interrupt")
break

exit



My Arduino code is:

#include <Servo.h>

Servo micro_servo;

int pos = 0;

const int servo_pin = 7;
const int trig_echo_pin = 3;

float duration, distance;

void setup() {
pinMode (servo_pin, OUTPUT);
pinMode (trig_echo_pin, OUTPUT);
Serial.begin(9600);
micro_servo.attach(servo_pin);
}

void loop() {
// Sweep the servo from 0 to 180 degrees
for (pos = 0; pos <= 180; pos++)
{
micro_servo.write(pos);
delay(50);
read_ultrasonic_distance(pos);
}
// Sweep the servo back from 180 to 0 degrees
for (pos = 180;pos>=180; pos--)
{
micro_servo.write(pos);
delay(50);
read_ultrasonic_distance(pos);
}
delay(200);
}

void read_ultrasonic_distance(int angle)
{
pinMode(trig_echo_pin, OUTPUT);
digitalWrite(trig_echo_pin, LOW);
delayMicroseconds(2);
digitalWrite(trig_echo_pin, HIGH);
delayMicroseconds(10);
digitalWrite(trig_echo_pin, LOW);

// Set the pin to input mode to receive the echo
pinMode(trig_echo_pin, INPUT);
duration = pulseIn(trig_echo_pin, HIGH); // Measure the duration of the echo pulse

// Calculate the distance based on the duration
distance = (duration * 0.0343) / 2;

// Send the angle and distance to the Python program via serial
Serial.print(angle);
Serial.print(",");
Serial.println(distance);
}

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