ARRAY
#Initializing our array
import numpy as np
array1 = np.arange(9,dtype = np.float_).reshape(3, 3)
#array1 = np.arange(9,dtype = np.int_)
print('First Array:')
print(array1)
print('Second Array:')
array2 = np.arange(11,20, dtype = np.float_).reshape(3, 3)
#array2 = np.arange(11,20, dtype = np.int_)
print(array2)
print('\n Adding two arrays:')
print(np.add(array1,array2))

print('\n Subtracting two arrays:')
print(np.subtract(array1,array2))

print('\n Multiplying two arrays:')
print(np.multiply(array1,array2))

print('\n Dividing two arrays:')
print(np.divide(array1,array2))






BASIC REGULAR
import re
str="The rain in spain"
x=re.findall("ai",str)
print("search of string 'ai':",x)
x=re.search("\s",str)
print("The first white-space character is located in position:",x.start())
x=re.split("\s",str,1)
print("spilt the string in the occurance of first white-space:",x)
x=re.sub("\5","9",str)
print("Each white-space is replaced with 9 digit:",x)
print("---------------------------------------")
#Metacharacters
x=re.findall("[a-g]",str)
print("The letters in between a to g in the string:",x)
x=re.findall("spain$",str)
if(x):
 print("\n",str,":yes,this string ends with 'spain' word")
else:
  print("\n NO match")
x=re.findall("^The",str)
if(x):
 print("\n",str,":yes,this string starts with 'The' words")
else:
 print("\n NOT match")
str1="The rain in spain falls mainly in the plain"
x=re.findall("ai*",str1)
print("\n All ai matching characters:",x)
if(x):
 print("yes,there is atlast one match")
else:
 print("NO match")
x=re.findall("all{1}",str1)
print("\n The string which contains 'all':",x)
if(x):
 print("yes,there is atlast one match")
else:
 print("NO match")
str2="That will be 59 dollars"
x=re.findall("\d",str2)
print("\n digits in the string:",x)
x=re.findall("do...rs:",str2)
print("\n Dont metacharacter matches any character:",x)
             


        

                                                    
                         








LIST
print("PROGRAM FOR BUILT-IN METHODS OF LIST \n");
animal=['cat','dog','rabbit']
print(animal)
animal.append('cow')
print("update animal list:",animal)
language=['python','java','c++','french','c']
return_value=language.pop(3)
print("removed element",return_value)
print("update list:",language)
vowels=['e','a','u','o','i']
vowels.sort()
print("sorted list in Ascending:",vowels)
vowels.reverse()
print("sorted list in Descending:",vowels)
vowel,insert(3,'0')
print("update list:",vowels)
animal=['cat','dog','rabbit','pig']
animal.remove('dog')
print('update animal list:',animal)
nums=['1','4','6','6','3','6']
nums.cleare()
print("list after clear",nums)
n=['vinu','sagar','aman']
n.sort()
print(n)