Resource not found nse india even with using Curl - web-scraping

Question

So i am scrapping the nse india results calendar site via using curl command and even after that its giving me "Resource not Found" error . Here's my code
url = f"https://www.nseindia.com/api/event-calendar?index=equities"
header1 ="Host:www.nseindia.com"
header2 = "User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0"
header3 ="Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8"
header4 ="Accept-Language:en-US,en;q=0.5"
header5 ="Accept-Encoding:gzip, deflate, br"
header6 ="DNT:1"
header7 ="Connection:keep-alive"
header8 ="Upgrade-Insecure-Requests:1"
header9 ="Pragma:no-cache"
header10 ="Cache-Control:no-cache"
def run_curl_command(curl_command, max_attempts):
result = os.popen(curl_command).read()
count = 0
while "Resource not found" in result and count < max_attempts:
result = os.popen(curl_command).read()
count += 1
time.sleep(1)
print("API Read")
result = json.loads(result)
result = pd.DataFrame(result)
def init():
max_attempts = 100
curl_command = f'curl "{url}" -H "{header1}" -H "{header2}" -H "{header3}" -H "{header4}" -H "{header5}" -H "{header6}" -H "{header7}" -H "{header8}" -H "{header9}" -H "{header10}" --compressed '
print(f"curl_command : {curl_command}")
run_curl_command(curl_command, max_attempts)
init()