Напечатать элемент словаря python

Python – Print Словарь

Для печати элементов словаря: ключ: Пары значения, клавиши или значения, вы можете использовать итератор для соответствующих клавишей: Пары значения, клавиши или значения, используя Dict.items (), Dict.keys () или DICT.values () соответственно и вызов печати () функции.

В этом руководстве мы пройдем примерные программы, напечатайте словарь в виде одной строки, ключевой словарь печати: Пары значения индивидуально, напечатайте клавиши словаря, и напечатайте значения словаря.

Печать словарь как одна строка

Чтобы распечатать целое содержимое словаря, функцию печати вызовов () с помощью словаря, передаваемыми в качестве аргумента. Print () Преобразует словарь в один строковый литерал и печатает на стандартный выход консоли.

В следующей программе мы будем инициализировать словарь и распечатать весь словарь.

dictionary = print(dictionary)

Ключ словаря печати: ценные пары

Чтобы напечатать ключ словаря: Пары значения, используйте A для Loop, чтобы пройти через клавишу: Пары значения, и используйте оператор печати, чтобы распечатать их. Dict.Items () Возвращает итератор для ключа: ценные пары и возвраты Ключ, значение во время каждой итерации.

В следующей программе мы будем инициализировать словарь и распечатать ключ словаря: Пары значения используют Python для петли.

dictionary = for key,value in dictionary.items(): print(key, ':', value)

Печать словарных ключей

Для печати клавиш словаря Используйте A для цикла для прохождения сквозь словарные клавиши, используя DICK.KEYS () ITERATOR, и функцию вызовов Print ().

В следующей программе мы будем инициализировать словарь и распечатать клавиши словаря, используя Python для цикла.

dictionary = for key in dictionary.keys(): print(key)

Печать значения словаря

Для печати значений словаря, используйте цикл A для Troup, чтобы пройти через значения словаря с использованием DICT.values () ITERATORY и функции вызова печати ().

В следующей программе мы будем инициализировать словарь и распечатать значения словаря, используя Python для петли.

dictionary = for value in dictionary.values(): print(value)

Резюме

В этом руководстве примеров Python мы узнали, как печатать словарь, его ключ: пары значения, его ключи или его значения.

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Printing Dictionary in Python

A dictionary is a data structure that stores key-value pairs. When you print a dictionary, it outputs pairs of keys and values.

Let’s take a look at the best ways you can print a dictionary in Python.

Print dictionary

The content of a Python dictionary can be printed using the print() function.

If you run the code, Python is going to return the following result:

Both keys and values are printed.

You can also use the dictionary method called items().

This function will display key-value pairs of the dictionary as tuples in a list.

dict_items([('brand', 'Toyota'), ('model', 'Corolla'), ('year', 2018)])

Printing with the for loop

items() can be used to separate dictionary keys from values. Let’s use the for loop to print the dictionary line by line.

If you run the code, the key-value pair will be printed using the print() function.

brand Toyota model Corolla year 2018

Print keys and values separately

With the items() method, you can print the keys and values separately.

for values:

Python offers additional methods keys() and values() methods to achieve the same result.

keys() method:

values() method:

Using list comprehension to print dictionary

With a list comprehension, we can print a dictionary using the for loop inside a single line of code.

This code will return the contents of a dictionary line by line.

brand Toyota model Corolla year 2018

In a similar manner, you can also do list comprehension with keys() and values().

brand model year Toyota Corolla 2018

Prettyprint dictionaries as a table

If a dictionary becomes more complex, printing it in a more readable way can be useful. This code will display the dictionary as a table.

Inside the new dictionary, four elements represent multiple cars. The first part is a key, and the second part (value) is a list consisting of the brand of a car, its model, and its year of production.

The first print() function displays four headers: “Key”, “Brand”, “Model”, “Year”. Each of them is spaced by the number of characters from the previous column.

The same is done to the dictionary items. Each value is a list assigned to three variables: brand, model, and year, with the same amount of spacing.

If you run the code, you’ll see a dictionary displayed in a pretty tabular form.

Key Brand Model Year 11 Toyota Corolla 2018 2 Audi A6 2014 4 Citroen C5 2009 7 Ford Focus 2017

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Python: Print items of a dictionary line by line (4 Ways)

In this article, we will discuss different ways to print line by line the contents of a dictionary or a nested dictionary in python.

As dictionary contains items as key-value pairs. So, first, let’s create a dictionary that contains student names and their scores i.e.

# A dictionary of student names and their score student_score =

Although it printed the contents of the dictionary, all the key-value pairs printed in a single line. If we have big dictionaries, then it can be hard for us to understand the contents. Therefore, we should print a dictionary line by line. Let’s see how to do that,

Frequently Asked:

Print a dictionary line by line using for loop & dict.items()

dict.items() returns an iterable view object of the dictionary that we can use to iterate over the contents of the dictionary, i.e. key-value pairs in the dictionary and print them line by line i.e.

# A dictionary of student names and their score student_score = < 'Ritika': 5, 'Sam': 7, 'John': 10, 'Aadi': 8># Iterate over key/value pairs in dict and print them for key, value in student_score.items(): print(key, ' : ', value)

Ritika : 5 Sam : 7 John : 10 Aadi : 8

This approach gives us complete control over each key-value pair in the dictionary. We printed each key-value pair in a separate line.

Print a dictionary line by line by iterating over keys

We can iterate over the keys of a dictionary one by one, then for each key access its value and print in a separate line i.e.

# A dictionary of student names and their score student_score = < 'Ritika': 5, 'Sam': 7, 'John': 10, 'Aadi': 8># Iterate over the keys in dictionary, access value & print line by line for key in student_score: print(key, ' : ', student_scoreНапечатать элемент словаря python)

Ritika : 5 Sam : 7 John : 10 Aadi : 8

Although by this approach we printed all the key value pairs line by line this is not an efficient method as compared to the previous one because to access one key-value pair, we are performing two operations.

Print a dictionary line by line using List Comprehension

In a single line using list comprehension & dict.items(), we can print the contents of a dictionary line by line i.e.

# A dictionary of student names and their score student_score = < 'Ritika': 5, 'Sam': 7, 'John': 10, 'Aadi': 8># Iterate over the key-value pairs of a dictionary # using list comprehension and print them [print(key,':',value) for key, value in student_score.items()]

Ritika : 5 Sam : 7 John : 10 Aadi : 8

Learn more about Python Dictionaries

Print a dictionary line by line using json.dumps()

In python, json module provides a function json.dumps() to serialize the passed object to a json like string. We can pass the dictionary in json.dumps() to get a string that contains each key-value pair of dictionary in a separate line. Then we can print that string,

import json # A dictionary of student names and their score student_score = < 'Ritika': 5, 'Sam': 7, 'John': 10, 'Aadi': 8># Print contents of dict in json like format print(json.dumps(student_score, indent=4))

We passed the dictionary object and count of indent spaces in json.dumps(). It returned a json like formatted string. Remember to import the json module for this approach.

Now, what if we have a nested python dictionary?

Printing nested dictionaries line by line in python

Suppose we have a nested dictionary that contains student names as key, and for values, it includes another dictionary of the subject and their scores in the corresponding subjects i.e.

# Nested dictionary containing student names and their scores in separate subjects student_score = < 'Mathew': < 'Math': 28, 'Science': 18, 'Econimics': 15>, 'Ritika': < 'Math': 19, 'Science': 20, 'Econimics': 19>, 'John': < 'Math': 11, 'Science': 22, 'Econimics': 17>>

If print this dictionary by passing it to the print() function,

Then the output will be like,

It printed all the contents in a single line. Therefore, it is tough to understand the contents. Now to print the contents of a nested dictionary line by line, we need to do double iteration i.e.

# Nested dictionary containing student names and their scores in separate subjects student_score = < 'Mathew': < 'Math': 28, 'Science': 18, 'Econimics': 15>, 'Ritika': < 'Math': 19, 'Science': 20, 'Econimics': 19>, 'John': < 'Math': 11, 'Science': 22, 'Econimics': 17>> # Iterate over key / value pairs of parent dictionary for key, value in student_score.items(): print(key, '--') # Again iterate over the nested dictionary for subject, score in value.items(): print(subject, ' : ', score)

Mathew -- Math : 28 Science : 18 Econimics : 15 Ritika -- Math : 19 Science : 20 Econimics : 19 John -- Math : 11 Science : 22 Econimics : 17

We first iterated over the items, i.e. key/value pairs of the dictionary, and for each pair printed the key. As value field is another dictionary, so we again iterated over the key-value pairs in this dictionary and printed its contents i.e. key/value pairs in separate lines.

Print nested dictionary line by line using json.dumps()

We can do this in a single line using json module’s dumps() function i.e.

import json # Nested dictionary containing student names and their scores in separate subjects student_score = < 'Mathew': < 'Math': 28, 'Science': 18, 'Econimics': 15>, 'Ritika': < 'Math': 19, 'Science': 20, 'Econimics': 19>, 'John': < 'Math': 11, 'Science': 22, 'Econimics': 17>> print(json.dumps(student_score, indent=4))

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5 thoughts on “Python: Print items of a dictionary line by line (4 Ways)”

Very useful information.Well explained.Easy to understand for beginners.How the code works is explained too. Thanks a lot.

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