Generate Captcha Using Python

from captcha.image import ImageCaptcha

image = ImageCaptcha(width = 280, height = 90)

captcha_text = 'python'

data = image.generate(captcha_text)

image.write(captcha_text,'CAPTCHA.png')

Program to find minimum cost path

R = 3

C = 3

def minCost(cost, m, n):

tc = [[0 for x in range(C)] for x in range(R)]

tc[0][0] = cost[0][0]

for i in range(1, m + 1):

tc[i][0] = tc[i-1][0] + cost[i][0]

for j in range(1, n + 1):

tc[0][j] = tc[0][j-1] + cost[0][j]

for i in range(1, m + 1):

for j in range(1, n + 1):

tc[i][j] = min(tc[i-1][j-1], tc[i-1][j],tc[i][j-1]) + cost[i][j]

return tc[m][n]

cost = [[1, 2, 3],

[4, 8, 2],

[1, 5, 3]]

print(minCost(cost, 2, 2))

Convert nested tuple to custom key dictionary

sample_tuple = ((4, 'Gfg', 10), (3, 'is', 8), (6, 'Best', 10))

print("The original tuple : " + str(sample_tuple))

res = [{'key': sub[0], 'value': sub[1], 'id': sub[2]} for sub in sample_tuple]

print("The converted dictionary : " + str(res))

Permutation of a given string using inbuilt function

from itertools import permutations

def allPermutations(str):

permList = permutations(str)

for perm in list(permList):

print (''.join(perm))

if __name__ == "__main__":

str = 'ABC'

allPermutations(str)

Validate an IP address using ReGex

import re

def Validate_It(IP):

regex = "(([0-9]|[1-9][0-9]|1[0-9][0-9]|"\

"2[0-4][0-9]|25[0-5])\\.){3}"\

"([0-9]|[1-9][0-9]|1[0-9][0-9]|"\

"2[0-4][0-9]|25[0-5])"

regex1 = "((([0-9a-fA-F]){1,4})\\:){7}"\

"([0-9a-fA-F]){1,4}"

p = re.compile(regex)

p1 = re.compile(regex1)

if (re.search(p, IP)):

return "Valid IPv4"

elif (re.search(p1, IP)):

return "Valid IPv6"

return "Invalid IP"

IP = "203.120.223.13"

print(Validate_It(IP))

IP = "fffe:3465:efab:23fe:2235:6565:aaab:0001"

print(Validate_It(IP))

IP = "2F33:12a0:3Ea0:0302"

print(Validate_It(IP))