- Dictionaries in Python are mutable and contain key-value pairs, with keys being unique and immutable.
- Common dictionary methods include keys(), values(), items(), get(), update(), pop(), popitem() etc.
- Dictionaries can be iterated over using for loops and sorted. Operations like merging, concatenation, checking presence of keys are also possible on dictionaries.
Dictionary in Python is an unordered collection of data values, used to store data values like a map, which unlike other Data Types that hold only single value as an element, Dictionary holds key:value pair. Key value is provided in the dictionary to make it more optimized. Each key-value pair in a Dictionary is separated by a colon :, whereas each key is separated by a ‘comma’.
A Dictionary in Python works similar to the Dictionary in a real world. Keys of a Dictionary must be unique and of immutable data type such as Strings, Integers and tuples, but the key-values can be repeated and be of any type.
WHAT IS DICTIONARY IN PYTHON?
HOW TO CREATE A DICTIONARY
INITIALIZE THE DICTIONARY
ACCESSING KEYS AND VALUES FROM A DICTIONARY
LOOPS TO DISPLAY KEYS AND VALUES IN A DICTIONARY
METHODS IN A DICTIONARY
TO WATCH VIDEO OR PDF:
https://computerassignmentsforu.blogspot.com/p/dictinpyxii.html
Dictionary in Python is an unordered collection of data values, used to store data values like a map, which unlike other Data Types that hold only single value as an element, Dictionary holds key:value pair. Key value is provided in the dictionary to make it more optimized. Each key-value pair in a Dictionary is separated by a colon :, whereas each key is separated by a ‘comma’.
A Dictionary in Python works similar to the Dictionary in a real world. Keys of a Dictionary must be unique and of immutable data type such as Strings, Integers and tuples, but the key-values can be repeated and be of any type.
WHAT IS DICTIONARY IN PYTHON?
HOW TO CREATE A DICTIONARY
INITIALIZE THE DICTIONARY
ACCESSING KEYS AND VALUES FROM A DICTIONARY
LOOPS TO DISPLAY KEYS AND VALUES IN A DICTIONARY
METHODS IN A DICTIONARY
TO WATCH VIDEO OR PDF:
https://computerassignmentsforu.blogspot.com/p/dictinpyxii.html
A tour of Python: slides from presentation given in 2012.
[Some slides are not properly rendered in SlideShare: the original is still available at http://www.aleksa.org/2015/04/python-presentation_7.html.]
Python is an interpreted, object-oriented programming language similar to PERL, that has gained popularity because of its clear syntax and readability.
Python is an interpreted, object-oriented, high-level programming language with dynamic semantics.
Its high-level built in data structures, combined with dynamic typing and dynamic binding, make it very attractive for Rapid Application Development, as well as for use as a scripting or glue language to connect existing components together.
A high level introduction to R statistical programming language that was presented at the Chicago Data Visualization Group's Graphing in R and ggplot2 workshop on October 8, 2012.
Python- Creating Dictionary,
Accessing and Modifying key: value Pairs in Dictionaries
Built-In Functions used on Dictionaries,
Dictionary Methods
Removing items from dictionary
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
A tour of Python: slides from presentation given in 2012.
[Some slides are not properly rendered in SlideShare: the original is still available at http://www.aleksa.org/2015/04/python-presentation_7.html.]
Python is an interpreted, object-oriented programming language similar to PERL, that has gained popularity because of its clear syntax and readability.
Python is an interpreted, object-oriented, high-level programming language with dynamic semantics.
Its high-level built in data structures, combined with dynamic typing and dynamic binding, make it very attractive for Rapid Application Development, as well as for use as a scripting or glue language to connect existing components together.
A high level introduction to R statistical programming language that was presented at the Chicago Data Visualization Group's Graphing in R and ggplot2 workshop on October 8, 2012.
Python- Creating Dictionary,
Accessing and Modifying key: value Pairs in Dictionaries
Built-In Functions used on Dictionaries,
Dictionary Methods
Removing items from dictionary
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
2. Python Dictionary
• The dictionary itself is an abstract datatype.
• In this it contains a group of data with the different data types.
• And each data is stored as a key-value pair, that key is used to
identify that data.
• We can add or replace values of the dictionary, it is mutable.
• But the key associated with the dictionary can't be changed.
• Therefore, the keys are immutable or unique.
9. The syntax provides useful type information. The square brackets indicate that it’s a
list. The parenthesis indicate that the elements in the list are tuples.
15. Which of the following statements create a
dictionary?
a) d = {}
b) d = {“john”:40, “peter”:45}
c) d = {40:”john”, 45:”peter”}
d) All of the mentioned
16. Items are accessed by their position in a dictionary
and All the keys in a dictionary must be of the same
type.
a. True
b. False
19. What will be the output of the following Python code snippet?
a={1:"A",2:"B",3:"C"}
for i,j in a.items():
print(i,j,end=" ")
a) 1 A 2 B 3 C
b) 1 2 3
c) A B C
d) 1:”A” 2:”B” 3:”C”
20. Select the correct way to print Emma’s age.
student = {1: {'name': 'Emma', 'age': '27', 'sex': 'Female'},
2: {'name': 'Mike', 'age': '22', 'sex': 'Male'}}
a. student[0][1]
b. student[1]['age']
c. student[0]['age']
d. student[2]['age']
24. Use get()
The get() method returns the value of the item with the specified key.
Syntax:
dictionary.get(keyname, value)
25.
26.
27. Iterate over Python dictionaries using for loops
d={'red':1,'green':2,'blue':3}
for color_key, value in d.items():
print(color_key,'corresponds to', d[color_key])
OUTPUT:
blue corresponds to 3
green corresponds to 2
red corresponds to 1
Remove a key from a Python dictionary
myDict = {'a':1,'b':2,'c':3,'d':4}
print(myDict)
if 'a' in myDict:
del myDict['a']
print(myDict)
28. OUTPUT:
{'d': 4, 'a': 1, 'b': 2, 'c': 3}
{'d': 4, 'b': 2, 'c': 3}
Sort a Python dictionary by key
color_dict = {'red':'#FF0000',
'green':'#008000',
'black':'#000000',
'white':'#FFFFFF‘
}
for i in sorted(color_dict):
print(key,” :”, color_dict[ i ]))
OUTPUT:
black: #000000
green: #008000
red: #FF0000
white: #FFFFFF
32. • The pop() method removes the specified item from the dictionary.
• The popitem() method removes the item that was last inserted into
the dictionary. In versions before 3.7, the popitem() method removes
a random item.
35. Concatenate two Python dictionaries into a new one
dic1={1:10, 2:20}
dic2={3:30, 4:40}
dic3={5:50,6:60}
dic4 = {}
for d in (dic1, dic2, dic3):
dic4.update(d)
print(dic4)
OUTPUT:
{1: 10, 2: 20, 3: 30, 4: 40, 5: 50, 6: 60}
36. Test whether a Python dictionary contains a specific key
fruits = {}
fruits["apple"] = 1
fruits["mango"] = 2
fruits["banana"] = 4
if "mango" in fruits:
print("Has mango")
else:
print("No mango")
if "orange" in fruits:
print("Has orange")
else:
print("No orange")
OUTPUT:
Has mango
No orange
37. QUESTIONS
Q1:Write a Python script to add a key to a dictionary.
Sample Dictionary : {0: 10, 1: 20}
Expected Result : {0: 10, 1: 20, 2: 30}
Q2: Write a Python script to concatenate following dictionaries to create a new one.
Sample Dictionary :
dic1={1:10, 2:20}
dic2={3:30, 4:40}
dic3={5:50,6:60}
Expected Result : {1: 10, 2: 20, 3: 30, 4: 40, 5: 50, 6: 60}
Q3: Write a Python script to check if a given key already exists in a dictionary.
Q4: Write a Python script to print a dictionary where the keys are numbers between 1 and 15 (both included) and
the values are square of keys.
Sample Dictionary
{1: 1, 2: 4, 3: 9, 4: 16, 5: 25, 6: 36, 7: 49, 8: 64, 9: 81, 10: 100, 11: 121, 12: 144, 13: 169, 14: 196, 15: 225}
38. • #Add two dictionaries and get
results.
• #concatenate dictionaries
• d1={'A':1000,'B':2000}
• d2={'C':3000}
• d1.update(d2)
• print("Concatenated dictionary is:")
• print(d1)
• o/p: Concatenated dictionary is:
• {'A': 1000, 'B': 2000, 'C': 3000}
#concatenate dictionaries
dic1={1:10, 2:20}
dic2={3:30, 4:40}
dic3={5:50,6:60}
dic4 = {}
for i in (dic1, dic2, dic3):
dic4.update(i)
print(dic4)
o/p:
{1: 10, 2: 20, 3: 30, 4: 40, 5: 50, 6: 60}
39. #Q3: Write a Python script to check if a given key already
exists in a dictionary.
d = {1: 10, 2: 20, 3: 30, 4: 40, 5: 50, 6: 60}
def present(i):
if i in d:
print(i ,' key is present in the dictionary')
else:
print(i, 'key is not present in the dictionary')
present(20)
present(3)
o/p:
20 key is not present in the dictionary
3 key is present in the dictionary
##sum and multiplication of dictionary
elements
d = {1: 10, 2: 20, 3: 1, 4: 1, 5: 1, 6: 1}
print(sum(d.values()))
mul=1
for i in d:
mul = mul * d[i]
print("Multiplication is", mul)
#
43. Q6: Write a Python script to merge two Python dictionaries.
Q7: Write a Python program to sum all the items in a dictionary.
Q8: Write a Python program to multiply all the items in a dictionary.
Q9: Write a Python program to remove a key from a dictionary.
Q10: Write a Python program to remove duplicates from Dictionary.
Q11: Write a Python program to create and display all combinations of letters, selecting each letter from a
different key in a dictionary.
Sample data : {'1':['a','b'], '2':['c','d']}
Expected Output:
ac
ad
bc
bd
44. Q9: Write a Python program to remove a key from
a dictionary.
• d = {'a':100, 'b':200, 'c':300, 'd':400}
• del d['a']
• >>>d
• {'b': 200, 'c': 300, 'd': 400}
45.
46. # Use function and print players details of a dictionary
def indian_cricket(d):
for i in d:
print("Details of Players are", d[i])
ind = {'test1':{'Dhoni':75, 'Kohli':170 }, 'test2':{'Dhoni':30, 'Pujara': 45} }
indian_cricket(ind)
o/p
Details of Players are {'Dhoni': 75, 'Kohli': 170}
Details of Players are {'Dhoni': 30, 'Pujara': 45}
47. • Define a python function ‘indian_cricket(d)’ which reads a dictionary
of the following form and identifies the player with the highest total
score. The function should return a pair (, topscore), where
playername is the name of the player with the highest score and
topscore is the total runs scored by the player.
Input is:
indian_cricket (
{‘test1’:{‘Dhoni’:75, ‘Kohli’:170},
‘test2’:{Dhoni’: 30, ‘Pujara’: 45}
})