import re


def prefix_headers_other_information_line_with_toolname(myHeaderString, toolname):
	"""
	Prefixing the Flags in the INFO fields with the name of the tool they come from
	:param myHeaderString: a string representing a Header line from a vcf header so should strart with 2 pound signs
	:param toolname: string name of the tool that called the variant
	:return: String
	"""
	return re.sub(r"^##", ''.join(["##", toolname.upper(), "_"]), str(myHeaderString))