Pattern python

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 ##PATTERN 1

rows=int(input("Enter number of rows:"))

#each_number will be 1 in first iteration and then 2 and so on

for each_number in range(1,rows+1):

#printing number will be in range (1 , i+1) i.e  (1,2) but 2 is excluded so only 1 will be printed , likewise the rest

for printing_pattern in range(1,each_number+1):

print(printing_pattern,end=" ") #The print() function inserts a new line at the end, by default In Python 3, end =" " appends space instead of newline.

print()

OUTPUT:

Enter number of rows:5

1 

1 2 

1 2 3 

1 2 3 4 

1 2 3 4 5 

##PATTERN 2

rows=int(input("Enter number of rows:"))

for each_number in range(1,rows+1):

for printing_pattern in range(1,each_number+1):

print(each_number,end="")

print()

OUTPUT:

Enter number of rows:5

1

22

333

4444

55555

##PATTERN 3

# rows=int(input("Enter number of rows:"))

for each_number in range(rows,0,-1):

for printing_pattern in range(1,each_number+1):

print(each_number,end="")

print()

OUTPUT:

Enter number of rows:5

55555

4444

333

22

1

##PATTERN 4

rows=int(input("Enter number of rows:"))

for each_number in range(1,rows+1):

for printing_pattern in range(1,each_number+1):

print("*", end=" ")

print()

OUTPUT:

Enter number of rows:5

* 

* * 

* * * 

* * * * 

* * * * * 

##PATTERN 5 , this pattern is reverse of the above program but the for loop is different compared to it ,it has one step included more in it  i.e  step

rows=int(input("Enter number of rows:"))

for each_number in range(rows,0,-1):

the -1 is used for decremented loop 

for printing_pattern in range(1,each_number+1):

print("*", end=" ") 

print()

OUTPUT:

Enter number of rows:5

* * * * * 

* * * * 

* * * 

* * 

* 

##PATTERN 6

rows=int(input("Enter number of rows:"))

for each_number in range(1,rows+1):

for empty_space in range(1,rows +1- each_number):

print(" ", end=" ")

for printing_pattern in range(1,each_number+1):

print("*", end=" ")

print()

OUTPUT:

Enter number of rows:5

        * 

      * * 

    * * * 

  * * * * 

* * * * * 

##PATTERN 7

rows=int(input("Enter number of rows:"))

for each_number in range(rows,0,-1):

for empty_space in range(1,rows +1-each_number):

print(" ", end=" ")

for printing_pattern in range(1,each_number+1):

print("*", end=" ")

print()

OUTPUT:

Enter number of rows:5

* * * * * 

  * * * * 

    * * * 

      * * 

        * 

##PATTERN 8

rows=int(input("Enter number of rows:"))

for each_number in range(1,rows+1):

for empty_space in range(1,rows +1- each_number):

print(" ", end=" ")

for printing_pattern in range(1, ( 2*each_number-1)+1):

print("*", end=" ")

print()

OUTPUT:

Enter number of rows:5

        * 

      * * * 

    * * * * * 

  * * * * * * * 

* * * * * * * * * 

##PATTTERN 9

rows=int(input("Enter number of rows:"))

for each_number in range(rows,0,-1):

for empty_space in range(1,rows +1- each_number):

print(" ", end=" ")

for printing_pattern in range(1, ( 2*each_number-1)+1):

print("*", end=" ")

print()

OUTPUT:

Enter number of rows:5

* * * * * * * * * 

  * * * * * * * 

    * * * * * 

      * * * 

        *