printing triangle pattern

       

word="ayman"
a="*"
c="h"
d="i"
n=0
m=0
while n<10:
    n=n+1
    print(c,end='')
    print(d,end='')
    print(a,end='')
    for b in word:
     print(b,end='')       
    print(a)
    m=0
    print(c,end='')
    while m<=n:
        print(d,end='')
        m=m+1
        
while n>=0:
      n=n-1
      print(a,end='')
      for b in word:
          print(b,end='')
      print(a)
      m=0
      print(c,end='')
      while m<n:
           m=m+1
           print(d,end='')
      print(d,end='')  
        
    

python 3.4.2 part 13 write and read a text file

First create file "readwritefile.py"

/****************************/

       


fw=open("sample.txt","w")

fw.write("i like to swim")

fw.close()



fr=open("sample.txt","r")

textcontent=fr.read()

print(textcontent)

fr.close()

/*********************/
1.fw is variable, it just indicate file write, you can have your own variable
2.fr is variable, it just indicate file read, you can have your own variable
3.open("sample.txt","w"). it create a text file named "sample.txt"
4.and the attribute "w" , w is predefined attribute indicating writing permission
5.and the attribute "r" , w is predefined attribute indicating reading permission
6.close() is used to avoid wastage of memory

python 3.4.2 part 12 downlaoding an image

First install beautifulscraper

pip install beautifulscraper

 

create a new file downimage.py

/******************************/

       


import urllib.request

import random



def download_image(url):

    file_name=random.randrange(1,1000)

    full_file_name=str(file_name)+".jpg"

    urllib.request.urlretrieve(url,full_file_name)



download_image("https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7r5YcS7A_m8OAUsgT7W9M7HUm0vR7BD1Sv2jNnbgaP0tlPpuogQjzQeqlsQK0BRK3YMc4pLWl6m3_JJ_DrvjdUBfLCtkvOv0YFlkLjmB4xTcxLr_cn1uSPsXPPM71e50uf9gQGU3FrvY/s1600/2.jpg")

/***************************************/

run it
1.random is used select a random number
2.first we create download_image(url) function
3.to give a name for downloaded image, we use random function
4.str(file_name) is used to convert  "file_name( number )" to string

5.urllib.request.urlretrieve is a function used to download the image

6."https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7r5YcS7A_m8OAUsgT7W9M7HUm0vR7BD1Sv2jNnbgaP0tlPpuogQjzQeqlsQK0BRK3YMc4pLWl6m3_JJ_DrvjdUBfLCtkvOv0YFlkLjmB4xTcxLr_cn1uSPsXPPM71e50uf9gQGU3FrvY/s1600/2.jpg" this url will pass to def download_image(url):

python 3.4.2 part 11 executing a function from other fileStudent code

Create two files

1.teacher.py

2.student.py

student.py

/******************/

def john():

    print("my name is john")

teacher.py
/*****************/

import student

student.john()

python 3.4.2 part 10 Add two numbers using def function

File ->new file

copy below code


/********************************/

       


def add_numb(*args):

 total=0

 for x in args:

  total=+x

  print(total)

  

add_numb(3)

add_numb(3,5,6)

/************************************/
then save it
Run->Run module(press f5)