file = open("Whatever.txt","r")

somestring = str(file.readline()) 			# Read in the whole line as a string
somestring  = str(file.readline()).splitlines()[0]	# Avoid it reading in a line break (not sure why this only sometimes happens)

x,y,z = line.split()				# Read in multiple parameters from a line (must be separated by whitespace)

for line in file:				# Read in whole file of three variables
	x,y,z = line.split()
	x = float(x)
	y = float(y)
	z =float(z)

file.close()