progs/a766.py


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import re
def is_valid_URL(str):
	regex = ("((http|https)://)(www.)?" +
			"[a-zA-Z0-9@:%._\\+~#?&//=]" +
			"{2,256}\\.[a-z]" +
			"{2,6}\\b([-a-zA-Z0-9@:%" +
			"._\\+~#?&//=]*)")
	p = re.compile(regex)
	if (str == None):
		return False
	if(re.search(p, str)):
		return True
	else:
		return False