I have to create user authentication using python-ldap. After googling around and trying out stuffs, this is the final code for you to use. Please remember to adjust the user_dn, and base_dn accordingly to the format used in your LDAP server.

ldap_auth.py

# to be able to import ldap run pip install python-ldap 

import ldap
 
if __name__ == "__main__":
  	ldap_server="x.x.x.x"
	username = "someuser"
	password= "somepassword"
	# the following is the user_dn format provided by the ldap server
	user_dn = "uid="+username+",ou=someou,dc=somedc,dc=local"
	# adjust this to your base dn for searching
	base_dn = "dc=somedc,dc=local"
	connect = ldap.initialize(ldap_server) # https://gist.github.com/femmerling/5097365#gistcomment-2751440
	search_filter = "uid="+username
	try:
		#if authentication successful, get the full user data
		connect.bind_s(user_dn,password)
		result = connect.search_s(base_dn,ldap.SCOPE_SUBTREE,search_filter)
		# return all user data results
		connect.unbind_s()
		print result
	except ldap.LDAPError:
		connect.unbind_s()
		print "authentication error"

Alternative from John Mudd.

import ldap
conn = ldap.open("ldap.company.com")
conn.simple_bind_s("[email protected]", "mypassword")