python - BeautifulSoup Returning empty array

Question

I'm currently trying to scrape data off a website, but using the code beneath it would return an empty array " [] " for some reason. I can't seem to figure out the reasoning behind it. When I check the html generated there seems to be a lot of . I am unsure what the issue seems to be with my code.

url = "http://www.hkex.com.hk/eng/csm/price_movement_result.htm?location=priceMoveSearch&PageNo=1&SearchMethod=2&mkt=hk&LangCode=en&StockType=ALL&Ranking=ByMC&x=51&y=6"
html = requests.get(url)
soup = BeautifulSoup(html.text,'html.parser')
rows = soup.find_all('tr')
print rows

I have attempted to parse non ".text" and also "lxml" instead of "html.parser" but ended up with the same result.

EDIT: Found the workaround, used selenium to open the page and grab the source that way instead.

url = "http://www.hkex.com.hk/eng/csm/price_movement_result.htm?location=priceMoveSearch&PageNo=1&SearchMethod=2&mkt=hk&LangCode=en&StockType=ALL&Ranking=ByMC&x=51&y=6"
driver = webdriver.Firefox()
driver.get(url)
f = driver.page_source
soup = BeautifulSoup(f,'html.parser')
rows = soup.find_all('tr')

Answer 1

this page use javascript to fetch data from server, and you can find javascript use this link to request data in chrome's dev_tools, so you can requests this link to get the info you need.

http://www.hkex.com.hk/eng/csm/ws/Result.asmx/GetData?location=priceMoveSearch&SearchMethod=2&LangCode=en&StockCode=&StockName=&Ranking=ByMC&StockType=ALL&mkt=hk&PageNo=1&ATypeSHEx=&AType=&FDD=&FMM=&FYYYY=&TDD=&TMM=&TYYYY=

there is no need to use selenium