# PROGRAM Check URL Type

from urllib.request import urlopen  

#### MODULE HTML Checker: ####

def HTML_Check(URL_input):
    response = urlopen(URL_input)
    Check_Content = response.getheader('Content-Type')
    Split_Content = Check_Content.split(";")
    return Split_Content[0] == 'text/html'
# END HTML_Check.

#### MODULE URL Opener: ####

def URL_Opener(URL_input):
    
    response = urlopen(URL_input)
    
    if HTML_Check(URL_input):
    #THEN
        print("This is a webpage:", URL_input)
        print("#### HEADER INFORMATION: ####")
        webpage1 = response.info()
        print(webpage1)

    else:
        print("This is NOT a webpage:", URL_input)

    # ENDIF

# END Check URL_Opener.

################################
######## MAIN PROGRAM ########
URL_Opener("http://www.damiantgordon.com/nt.pdf")
print(" ")
URL_Opener("http://www.damiantgordon.com/")
print(" ")
URL_Opener("https://docs.python.org/")
print(" ")
URL_Opener("http://www.tudublin.ie/")
print(" ")
##############################