Python pprint: Exercise, Practice, Solution
Python pprint [6 exercises with solution]
You may read our Python list tutorial before solving the following exercises.
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The pprint module provides a capability to "pretty-print" arbitrary Python data structures in a form which can be used as input to the interpreter. The formatted representation keeps objects on a single line if it can, and breaks them onto multiple lines if they don't fit within the allowed width. Construct PrettyPrinter objects explicitly if you need to adjust the width constraint.
1. Write a Python program to print a dictionary, nested dictionary, list of dictionaries of dictionaries using the pprint module.
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2. Write a Python program to sort the keys of a dictionary before printing it using the pprint module.
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3. Write a Python program that specifies the width of the output while printing a list, dictionary using the pprint module.
"width" (default 80) specifies the desired maximum number of characters per line in the output. If a structure cannot be formatted within the width constraint, a best effort will be made.
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4. Write a Python program that specifies the indentation while printing a nested dictionary using the pprint module.
"indent" (default 1) specifies the amount of indentation added for each nesting level.
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5. Write a Python program to fetch information about a project (from PyPI) using pprint() function.
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6. Write a Python program to fetch information about a project (i.e. PyPI) using pprint() function. Limit the result to a certain level and specify the width of the content.
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List: Cheat Sheet
Making a list:
colors = ['Red', 'Blue', 'Green', 'Black', 'White']
Accessing elements:
# Getting the first element first_col = colors[0] # Getting the second element second_col = colors[1] # Getting the last element newest_col = colors[-1]
Modifying individual items:
# Changing an element colors[0] = 'Yellow' colors[-2] = 'Red'
Adding elements:
# Adding an element to the end of the list
colors.append('Orange')
# Starting with an empty list
colors = []
colors.append('Red')
colors.append('Blue')
colors.append('Green')
# Inserting elements at a particular position
colors.insert(0, 'Violet')
colors.insert(2, 'Purple')
Removing elements:
# Deleting an element by its position
del colors[-1]
# Removing an item by its value
colors.remove('Green')
Popping elements:
# Pop the last item from a list most_recent_col = colors.pop() print(most_recent_col) # Pop the first item in a list first_col = colors.pop(0) print(first_col)
List length:
# Find the length of a list
num_colors = len(colors)
print("We have " + str(num_colors) + " colors.")
Sorting a list:
# Sorting a list permanently colors.sort() # Sorting a list permanently in reverse alphabetical order colors.sort(reverse=True) # Sorting a list temporarily print(sorted(colors)) print(sorted(colors, reverse=True)) # Reversing the order of a list colors.reverse()
Looping through a list:
# Printing all items in a list
for col in colors:
print(col)
# Printing a message for each item, and a separate message afterwards
for col in colors:
print("Welcome, " + col + "!")
print("Welcome, we're glad to see you all!")
The range() function:
# Printing the numbers 0 to 2000 for num in range(2001): print(num) # Printing the numbers 1 to 2000 for num in range(1, 2001): print(num) # Making a list of numbers from 1 to a million nums = list(range(1, 1000001))
Simple statistics:
# Finding the minimum value in a list nums = [23, 22, 44, 17, 77, 55, 1, 65, 82, 2] num_min = min(nums) # Finding the maximum value nums = [23, 22, 44, 17, 77, 55, 1, 65, 82, 2] num_max = max(nums) # Finding the sum of all numbers nums = [23, 22, 44, 17, 77, 55, 1, 65, 82, 2] total_num = sum(nums)
Slicing a list:
# Getting the first three items colors = ['Red', 'Blue', 'Green', 'Black', 'White'] first_three = colors [:3] # Getting the middle three items middle_three = colors[1:4] # Getting the last three items last_three = colors[-3:]
Copying a list:
# Making a copy of a list colors = ['Red', 'Blue', 'Green', 'Black', 'White'] copy_of_colors = colors[:]
List of Comprehensions:
# Using a loop to generate a list of square numbers squr = [] for x in range(1, 11): sq = x**2 squr.append(sq) # Using a comprehension to generate a list of square numbers squr = [x**2 for x in range(1, 11)] # Using a loop to convert a list of names to upper case colors = ['Red', 'Blue', 'Green', 'Black', 'White'] upper_cols = [] for cols in colors: upper_cols.append(cols.upper()) # Using a comprehension to convert a list of names to upper case colors = ['Red', 'Blue', 'Green', 'Black', 'White'] upper_cols = [cols.upper() for cols in colors]
Python Code Editor:
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