Hey guys can you fix python code, when I run it and type letters (numbers only) it is supposed to restart the function, but it prints a whole load of stuff and exits the program.

def weight_for_blv():
    global weight_blv
    print "How much does your meat weigh(kg)?"

    weight_blv = int(raw_input(">"))

    if (weight_blv > 0) and (weight_blv <= 10):
        doness()
    elif (weight_blv <= 0) and (weight_blv > 10):
        print "Invalid, type again, the minimum is greater than 0 and the maximum is 10, and numbers only"
        weight_for_blv()
    else:
        print "Invalid, type again, the minimum is greater than 0 and the maximum is 10, and numbers only"
        weight_for_blv()

ruler pretty much said it, you're casting your input to an int so if you give it letters it errors (if those letters aren't a variable). You also may want to change the 'and' in your elif statement to an 'or'