Controlling servo motor

servo_motor_rpi.py

# installing libraries
# sudo apt-get install -y python-pip
# sudo pip install wiringpi

import time
import wiringpi
wiringpi.wiringPiSetupGpio()
wiringpi.pinMode(18, wiringpi.GPIO.PWM_OUTPUT)
wiringpi.pwmSetMode(wiringpi.GPIO.PWM_MODE_MS)
wiringpi.pwmSetClock(192)
wiringpi.pwmSetRange(2000)
delay_period = 0.01

for t in range(0, 1):
    for pulse in range(150, 250, 1):
        wiringpi.pwmWrite(18, pulse)
        time.sleep(delay_period)
    time.sleep(1)
    for pulse in range(250, 150, -1):
        wiringpi.pwmWrite(18, pulse)
        time.sleep(delay_period)
        
        
while True:
    for pulse in range(50, 250, 1):
        wiringpi.pwmWrite(18, pulse)
        time.sleep(delay_period)
    for pulse in range(250, 50, -1):
        wiringpi.pwmWrite(18, pulse)
        time.sleep(delay_period)
        
while True:
    for pulse in range(100, 200, 1):
        wiringpi.pwmWrite(18, pulse)
        time.sleep(delay_period)
    for pulse in range(200, 100, -1):
        wiringpi.pwmWrite(18, pulse)
        time.sleep(delay_period)

        
for pulse in range(150, 250, 1):
    wiringpi.pwmWrite(18, pulse)
    time.sleep(delay_period)
    
for pulse in range(50, 250, -1):
    wiringpi.pwmWrite(18, pulse)
    time.sleep(delay_period)
    
for pulse in range(50, 250, 0):
    wiringpi.pwmWrite(18, pulse)
    time.sleep(delay_period)
    
    
for pulse in range(250, 150, -1):
    wiringpi.pwmWrite(18, pulse)
    time.sleep(delay_period)
    
    
for t in range(0, 1):
    for pulse in range(150, 350, 1):
        wiringpi.pwmWrite(18, pulse)
        time.sleep(delay_period)
    time.sleep(1)
    for pulse in range(350, 150, -1):
        wiringpi.pwmWrite(18, pulse)
        time.sleep(delay_period)

How to control servo motor on raspberry PI