string1 = "arzhang malek"
firstname = string1.split()[0]
lastname = string1.split()[1]
firstname + lastname
num = "12"
print(num*5)
num = '12 '
type(num)
num = "5"
a = int(num)
print(a*10)
num = 10
a = str(num)
print(a*10)
!pip install nltk
pip install sklearn
import sklearn
x = int(input("Enter a "))
if (x>0):
print("your number is: +")
else:
print("-")