Types Of Functions

for I in range(0,20,2) Print(i) Output= 2 4 6 8 10 12 14 16 18

Start Stop 0 ,1 ,2 ,3 ,4 ,5 ,6 ,7 ,8 , 9, 10 Step (2) Output 0 2 4 6 8

Tuples are an ordered sequences of items, just like lists. The main difference between tuples and lists is that tuples cannot be changed.

Dictionaries are data structures that map unique keys to value, but dictionary keys can be any immutable data type

webstersDict[‘marathon’] Output- a running race that is about 26 miles

webstersDict[‘shoe’] = ‘an external covering for the human foot’

webstersDict update({‘ran’ : ‘past tense of run’, ‘shoes’ : ‘plural of shoe’})

Story count = {‘is’ : 100,’the’ : 90, ‘michael’ : 12, ‘runs’ : 5} storycount.get(‘Michael’) Output- 12

The pop method removes a key and returns the value

storyCount.pop(‘the’) Output- 90

The keys method returns the keys of the dictionary as a dictionary view object. keys() type(storyCount.keys()) Output- dict_keys

The values method returns the values in the dictionary

storyCount.values() Output- dict_values([100, 12, 5])

The items method returns a dictionary view object

list(webstersDict.items()) Output-[(‘person’,, ‘a human being’)] Etc.

A for loop is used for iterating over a sequence (list, tuple, dictionary, string, etc).

myName = “Michael” for x in myName: print(x) Output- M i c h a e l

list(range(0,10)) Output- [0,1,2,3,4,5,6,7,8,9]

The enumerate function returns a tuple containing a count for every iteration (from start which defaults to 0)

DataScienceTools = [‘Python’, ‘R’, ‘SQL’, ‘Git’ ] for index, tool in enumerate(dataScienceTools): print(index,tool) Output- 0 Python 1 R 2 SQL 3 Git

upper() method lower() method

#This is a comment print("Hello, World!")