# Deleting all even numbers from a list
a = [1,2,3,4,5]
del a[1::2]
print(a)

""" Currency Converter
----------------------------------------
"""
import urllib.request
import json
def currency_converter(currency_from, currency_to, currency_input):
    yql_base_url = "https://query.yahooapis.com/v1/public/yql"
    yql_query = 'select%20*%20from%20yahoo.finance.xchange%20where%20pair' \
                '%20in%20("'+currency_from+currency_to+'")'
    yql_query_url = yql_base_url + "?q=" + yql_query + "&format=json&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys"
    try:
        yql_response = urllib.request.urlopen(yql_query_url)
        try:
            json_string = str(yql_response.read())
            json_string = json_string[2:
            json_string = json_string[:-1]
            print(json_string)
            yql_json = json.loads(json_string)
            last_rate = yql_json['query']['results']['rate']['Rate']
            currency_output = currency_input * float(last_rate)
            return currency_output
        except (ValueError, KeyError, TypeError):
            print(yql_query_url)
            return "JSON format error"
    except IOError as e:
        print(str(e))
currency_input = 1
#currency codes : http://en.wikipedia.org/wiki/ISO_4217
currency_from = "USD"
currency_to = "TRY"
rate = currency_converter(currency_from, currency_to, currency_input)
print(rate)

import os
import sys
import argparse
import json
import csv
import getpass
import string
import random
import re

from datetime import datetime
import ldap
import requests
from requests.packages.urllib3.exceptions import InsecureRequestWarning
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
from requests.auth import HTTPBasicAuth
import validators

import ipdb

# ldap functions
def get_ldap_group_members(ldap_group, user, passwrd, DOMAIN, DOMAIN_SEARCH_BASE):
    #DOMAIN_GROUP, DOMAIN_USER, DOMAIN_PASS, DOMAIN, DOMAIN_SEARCH_BASE
    '''
    Input a user name and search the directory
    '''
    #---- Setting up the Connection
    #account used for binding - Avoid putting these in version control
    bindDN = str(user)
    bindPass = passwrd

    #set some tuneables for the LDAP library.
    ldap.set_option(ldap.OPT_X_TLS_REQUIRE_CERT, ldap.OPT_X_TLS_ALLOW)
    #ldap.set_option(ldap.OPT_X_TLS_CACERTFILE, CACERTFILE)
    
    conn = ldap.initialize('ldaps://'+str(DOMAIN))
    conn.protocol_version = 3
    conn.set_option(ldap.OPT_REFERRALS, 0)

    #authenticate the connection so that you can make additional queries
    try:
        result = conn.simple_bind_s(bindDN, bindPass) 
    except ldap.INVALID_CREDENTIALS:
        result = "Invalid credentials for %s" % user
        sys.exit()

    #build query in the form of (uid=user)
    ldap_query = '(cn=' + ldap_group + ')'

    query_result = []  
    lencount = True
    range_start = 0
    total_active_students_count = 0
    
    while lencount:
        #print(len(query_result))
        range_end = range_start + 1499
        member_range = ['member;range=' + str(range_start) + '-' + str(range_end)]
        #print(member_range)
        ldap_info = conn.search_s(str(DOMAIN_SEARCH_BASE), ldap.SCOPE_SUBTREE, filterstr=ldap_query, attrlist=member_range)
        member_range = next(iter(ldap_info[0][1].keys()))
        ldap_objects = ldap_info[0][1][member_range]
        print("\n")
        for ldap_object in ldap_objects:
            decoded_member_string = ldap_object.decode("utf-8")
            member_cn = re.split('=|,', decoded_member_string)[1]
            print(f"User number: {total_active_students_count} in {ldap_group}: {member_cn}")
            query_result.append(member_cn)
            total_active_students_count = total_active_students_count + 1
        
        if len(ldap_objects) == 1500:
            lencount = True
            range_start += 1500
            range_end += 1500
        
        else:
            lencount = False
        
    print(f"TOTAL USERS IN ActiveStudents: {total_active_students_count}")
    return query_result


def main():
    user = input("Enter a UNT bind username: ") + "@students.ad.unt.edu"
    passwrd = getpass.getpass(prompt='Enter UNT bind password: ', stream=None)
    get_ldap_group_members("ActiveStudents", user, passwrd, "students.ad.unt.edu", "DC=students,DC=ad,DC=unt,DC=edu")


if __name__ == "__main__":
    main()

# Python program for implementation of Bubble Sort

def bubbleSort(arr):
	n = len(arr)

	# Traverse through all array elements
	for i in range(n-1):
	# range(n) also work but outer loop will repeat one time more than needed.

		# Last i elements are already in place
		for j in range(0, n-i-1):

			# traverse the array from 0 to n-i-1
			# Swap if the element found is greater
			# than the next element
			if arr[j] > arr[j+1] :
				arr[j], arr[j+1] = arr[j+1], arr[j]

# Driver code to test above
arr = [64, 34, 25, 12, 22, 11, 90]

bubbleSort(arr)

print ("Sorted array is:")
for i in range(len(arr)):
	print ("%d" %arr[i]),

# Python Program to calculate the square root

num = float(input('Enter a number: '))

num_sqrt = num ** 0.5
print('The square root of %0.3f is %0.3f'%(num ,num_sqrt))

# function which return reverse of a string
def isPalindrome(s):
    return s == s[::-1]
 
# Driver code
s = "malayalam"
ans = isPalindrome(s)
 
if ans:
    print("Yes")
else:
    print("No")