I try to substitue strings with variables using locals() in python but I can find a way to use the % character inside the string without error. Here is a concrete example :
color = colors_generator() #the function return a color
html = """<html><head>
<style>#square{color:%(color)s;width:100%;height:100%;}</style>
</head> <body> <div id="square"> </div>
</body></html>""" % locals()
print "Content-Type: text/html\n"
print html
Result : TypeError: not enough arguments for format string
The problem is the % character in 100%. How can I escape it?