Count files in directory

import os, re
files = [name for name in os.listdir('.') if os.path.isfile(name)]
print files
# Get the count
print len([name for name in os.listdir('.') if os.path.isfile(name)])

Count files in directory

import os, re
files = [f for f in os.listdir('.') if re.match(r'image-[0-9]+\.png', f)]

# Get the count
print len([f for f in os.listdir('.') if re.match(r'image-[0-9]+\.png', f)])