def can contain multiple expressions whereas lamda is a single expression function def creates a function and assigns a name so as to call it later. lambda creates a function and returns the function itself def can have return statement. lambda cannot have return statements lambda can be used inside list, dictionary.

>>> sqr = [] >>> for i in range(10): sqr.append(i**2) >>> sqr [0, 1, 4, 9, 16, 25, 36, 49, 64, 81] Combination  comb = [] >>> for i in [1, 5, 3]: for j in [2,1,5]: if i!=j: comb.append((i,j)) >>> comb [(1, 2), (1, 5), (5, 2), (5, 1), (3, 2), (3, 1), (3, […]

>>> stack = [11,22,33,44,55,66,77] >>> stack.append(88) >>> stack [11, 22, 33, 44, 55, 66, 77, 88] >>> stack.append(99) >>> stack [11, 22, 33, 44, 55, 66, 77, 88, 99] >>> stack.pop() 99 >>> stack.pop() 88 >>> stack.pop() 77 >>> stack.pop() 66 >>> stack [11, 22, 33, 44, 55]

Python list >>> arr = [22, 33, 44, 55, 66, 77, 1, 2, 3, 4, 5, 6] >>> arr [22, 33, 44, 55, 66, 77, 1, 2, 3, 4, 5, 6] >>> arr.index(2) 7 >>> arr.remove(77) >>> arr [22, 33, 44, 55, 66, 1, 2, 3, 4, 5, 6] >>> arr.reverse() >>> arr [6, 5, […]

Keywords Keywords are the reserved words in Python. We cannot use a keyword as variable name, function name or any other identifier. They are used to define the syntax and structure of the Python language. In Python, keywords are case sensitive. Python is a dynamic language. It changes during time. The list of keywords may […]

$ vim zendanwar.py #!/usr/bin/python # Hello world python program print “Hello python World!” save the the file Make the permission with following comman $ chmod +x zendanwar.py lastly run your file $ zendanwar.py output : Hello python World!

pip now comes bundled with new versions of python: Need to add the path for pip installation to system variable. By default, pip is installed to C:\Python34\Scripts\pip so the path “C:\Python34\Scripts” needs to be added the “path” variable.

#!/usr/bin/python import MySQLdb db = MySQLdb.connect(“localhost”,”user”,”password”,”dbname” ) cursor = db.cursor()

>>> sorted([5, 2, 3, 1, 4,8,9,7]) output : [1, 2, 3, 4, 5, 7, 8, 9] list.sort() method : >>> a= [5, 2, 3, 1, 4,8,9,7] >>> a.sort() >>> a output : [1, 2, 3, 4, 5, 7, 8, 9] Key Functions : >>> sorted(“a key parameter to specify a function to be called on […]