In Today's Article we are going to learn how to fetch Nifty and Bank Nifty Data using Python and it's going to be amazing.
From where we will Fetch Data?

Ofcourse it's Going to be NSE Website from here we will fetch data such as Strike Price, Call and Put Option Data and based on Call and Put option data we will discover at which level more people are interested in Call and Put Option.
Let's Get into Coding

# Libraries
import requests
import json
import math

# Python program to print
# colored text and background
def strRed(skk):         return "\033[91m {}\033[00m".format(skk)
def strGreen(skk):       return "\033[92m {}\033[00m".format(skk)
def strYellow(skk):      return "\033[93m {}\033[00m".format(skk)
def strLightPurple(skk): return "\033[94m {}\033[00m".format(skk)
def strPurple(skk):      return "\033[95m {}\033[00m".format(skk)
def strCyan(skk):        return "\033[96m {}\033[00m".format(skk)
def strLightGray(skk):   return "\033[97m {}\033[00m".format(skk)
def strBlack(skk):       return "\033[98m {}\033[00m".format(skk)
def strBold(skk):        return "\033[1m {}\033[0m".format(skk)

# Method to get nearest strikes
def round_nearest(x,num=50): return int(math.ceil(float(x)/num)*num)
def nearest_strike_bnf(x): return round_nearest(x,100)
def nearest_strike_nf(x): return round_nearest(x,50)

# Urls for fetching Data
url_oc      = "https://www.nseindia.com/option-chain"
url_bnf     = 'https://www.nseindia.com/api/option-chain-indices?symbol=BANKNIFTY'
url_nf      = 'https://www.nseindia.com/api/option-chain-indices?symbol=NIFTY'
url_indices = "https://www.nseindia.com/api/allIndices"

# Headers
headers = {'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36',
            'accept-language': 'en,gu;q=0.9,hi;q=0.8',
            'accept-encoding': 'gzip, deflate, br'}

sess = requests.Session()
cookies = dict()

# Local methods
def set_cookie():
    request = sess.get(url_oc, headers=headers, timeout=5)
    cookies = dict(request.cookies)

def get_data(url):
    set_cookie()
    response = sess.get(url, headers=headers, timeout=5, cookies=cookies)
    if(response.status_code==401):
        set_cookie()
        response = sess.get(url_nf, headers=headers, timeout=5, cookies=cookies)
    if(response.status_code==200):
        return response.text
    return ""

def set_header():
    global bnf_ul
    global nf_ul
    global bnf_nearest
    global nf_nearest
    response_text = get_data(url_indices)
    data = json.loads(response_text)
    for index in data["data"]:
        if index["index"]=="NIFTY 50":
            nf_ul = index["last"]
            print("nifty")
        if index["index"]=="NIFTY BANK":
            bnf_ul = index["last"]
            print("banknifty")
    bnf_nearest=nearest_strike_bnf(bnf_ul)
    nf_nearest=nearest_strike_nf(nf_ul)

# Showing Header in structured format with Last Price and Nearest Strike

def print_header(index="",ul=0,nearest=0):
    print(strPurple( index.ljust(12," ") + " => ")+ strLightPurple(" Last Price: ") + strBold(str(ul)) + strLightPurple(" Nearest Strike: ") + strBold(str(nearest)))

def print_hr():
    print(strYellow("|".rjust(70,"-")))

# Fetching CE and PE data based on Nearest Expiry Date
def print_oi(num,step,nearest,url):
    strike = nearest - (step*num)
    start_strike = nearest - (step*num)
    response_text = get_data(url)
    data = json.loads(response_text)
    currExpiryDate = data["records"]["expiryDates"][0]
    for item in data['records']['data']:
        if item["expiryDate"] == currExpiryDate:
            if item["strikePrice"] == strike and item["strikePrice"] < start_strike+(step*num*2):
                #print(strCyan(str(item["strikePrice"])) + strGreen(" CE ") + "[ " + strBold(str(item["CE"]["openInterest"]).rjust(10," ")) + " ]" + strRed(" PE ")+"[ " + strBold(str(item["PE"]["openInterest"]).rjust(10," ")) + " ]")
                print(data["records"]["expiryDates"][0] + " " + str(item["strikePrice"]) + " CE " + "[ " + strBold(str(item["CE"]["openInterest"]).rjust(10," ")) + " ]" + " PE " + "[ " + strBold(str(item["PE"]["openInterest"]).rjust(10," ")) + " ]")
                strike = strike + step

# Finding highest Open Interest of People's in CE based on CE data         
def highest_oi_CE(num,step,nearest,url):
    strike = nearest - (step*num)
    start_strike = nearest - (step*num)
    response_text = get_data(url)
    data = json.loads(response_text)
    currExpiryDate = data["records"]["expiryDates"][0]
    max_oi = 0
    max_oi_strike = 0
    for item in data['records']['data']:
        if item["expiryDate"] == currExpiryDate:
            if item["strikePrice"] == strike and item["strikePrice"] < start_strike+(step*num*2):
                if item["CE"]["openInterest"] > max_oi:
                    max_oi = item["CE"]["openInterest"]
                    max_oi_strike = item["strikePrice"]
                strike = strike + step
    return max_oi_strike

# Finding highest Open Interest of People's in PE based on PE data 
def highest_oi_PE(num,step,nearest,url):
    strike = nearest - (step*num)
    start_strike = nearest - (step*num)
    response_text = get_data(url)
    data = json.loads(response_text)
    currExpiryDate = data["records"]["expiryDates"][0]
    max_oi = 0
    max_oi_strike = 0
    for item in data['records']['data']:
        if item["expiryDate"] == currExpiryDate:
            if item["strikePrice"] == strike and item["strikePrice"] < start_strike+(step*num*2):
                if item["PE"]["openInterest"] > max_oi:
                    max_oi = item["PE"]["openInterest"]
                    max_oi_strike = item["strikePrice"]
                strike = strike + step
    return max_oi_strike

set_header()
print('\033c')
print_hr()
print_header("Nifty",nf_ul,nf_nearest)
print_hr()
print_oi(10,50,nf_nearest,url_nf)
print_hr()
print_header("Bank Nifty",bnf_ul,bnf_nearest)
print_hr()
print_oi(10,100,bnf_nearest,url_bnf)
print_hr()

# Finding Highest OI in Call Option In Nifty
nf_highestoi_CE = highest_oi_CE(10,50,nf_nearest,url_nf)

# Finding Highet OI in Put Option In Nifty
nf_highestoi_PE = highest_oi_PE(10,50,nf_nearest,url_nf)

# Finding Highest OI in Call Option In Bank Nifty
bnf_highestoi_CE = highest_oi_CE(10,100,bnf_nearest,url_bnf)

# Finding Highest OI in Put Option In Bank Nifty
bnf_highestoi_PE = highest_oi_PE(10,100,bnf_nearest,url_bnf)


print(strCyan(str("Major Support in Nifty:")) + str(nf_highestoi_CE))
print(strCyan(str("Major Resistance in Nifty:")) + str(nf_highestoi_PE))
print(strPurple(str("Major Support in Bank Nifty:")) + str(bnf_highestoi_CE))
print(strPurple(str("Major Resistance in Bank Nifty:")) + str(bnf_highestoi_PE))
Output

Part-2: Website
If you guys want me to Fetch Call and Put Option Data for Global Stocks and Indices let me know in Comment Section🙂✌️
GoodBye👋
NSE Option Chain Data using Python

From where we will Fetch Data?

Let's Get into Coding

Output
