This document discusses Python loops and conditionals. It provides examples of using break and continue in for loops. It also covers operators like == and !=, calculating remainders with the % operator, using range() to iterate over a range of numbers, appending to lists, taking user input, nested loops, and arithmetic operations.

1. codes & notes with every ideas in our study

2. break & continue :
 Break : its job to go out from
 the actually condition or loop only
 Ex
 x=[0,1,2,3,4,5]
 for i in x :
 print ("*")
 if i == 2:
 break
Output : ***
>>>NOT ******
for ( ) :
If ( ) :
--------
--------
--------
break
-------
-------
-----
break
-----

3. o Continue : its job to repeat
o the actually condition or loop only
o Ex
o x=[0,1,2,3,4,5]
o for i in x :
o print ("*")
o if i == 2:
o continue
o print("$")
Output : ******
>>> there is no “$”
While
if
______
______
continue
______
______
_____
continue
_____

4. I. for & while & if >>> should end with ( : )
II. X=X+1 >>>X+=1 && X-1 >>> X=X-1
III. X=Y “take the value in y and put it in x”
IV. X==Y “is the value in x as the same in y ? ”
V. X != Y “ X not equal Y ”
VI. (while True:)testing the code without doing Run every time
VII. When I use many loops ; first I finish the last loop
for (1)
for(2)
for(3)
Third loop
second loop
First loop

5.  % :: 10%3=1 , 53%10=3 , 115%100=15 “calculate the remainder”
 // :: 11//3=3 , 30//9=3 , 100//40=2 “set the integer num. only”
 To test if the number is negative >>> if x < 0
 To test if the number is odd >>> if x!= 0
 To write a comment >>> #...
 To calculate x power y >>> x**y
x=[1,2,3,4,5,6,7,8,9,10]
for i in x:
print(i)
Output : 12345678910
 So “for loop” start
automaticlly from index[0]
and it additions 1 every time
until the end of the loop
range ( 5 , 100 , 2 )
First num
Last num
Rate of change

9. x=str(input('enter numbers only :'))
for i in x:
if i=='0' or i=='1'or i=='2'or i=='3'or i=='4'or i=='5'or i=='6'or i=='7'or i=='8'or i=='9':
z=True
else:
z=False
break
print(z)
1)Enter a string which have numbers or letters or twice ,but if and only if this string
includes numbers only: print true , else: print false?

10. a=[1,2]
b=[]
b=b+a
b=b+a
a.append(3)
print(b)
Output :: [ 1 , 2 , 1 , 2 ]

11. a=[1,2]
b=[]
c=[4,5,6]
b.append(a)
a.append(c)
a.append(3)
print(b)
Output : [ [ 1 , 2 , [ 4 , 5 , 6 ] , 3 ] ]
 So we can say that python is a dynamic language
which-in case there is no ‘=’operation-have to use all
‘append’ in the code

12. 4]Take from the user a list of numbers then print the maximum and
minimum at last the average of this list ?
Exam Question

13. for i in range (1,3,1):
for j in range (7,3,-2):
for k in range (1,i,1):
print ('$')
print ('@')
print ('#')
Output:: @@#$@$@#

14. 6]Take from the user 2 numbers and let him choose an operation
between them?

15. veryyyy imporataaaaaaant
Extra practice sheet 3
http://www.acadox.com/action_handler/download/resource/48372/1287
62.pdf