python-snippets
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python-snippets
About the Book
About the Author
Table of Contents
- “Python Tips and Tricks: A guide to making the most of the python language”
- How to iterate through 2 lists in Python:
- How to Split a String on the First N Occurrences in Python
- How to Quickly Find the Longest String in a List in Python
- You can round numbers in Python using negative rounding numbers
- Get Rid of Duplicates without using sets
- Generate Random Numbers using module random()
- 3 Ways to Check Whether a List is Empty
- How to replace a text with some other text
- How to use Lambda functions
- How to Quickly Simplify if statements
- How to find the first day of the month
- How to put days before months
- How to find the difference between 2 dates in months
- How to subtract weeks from a date
- How to subtract days from a date
- How to add weeks to a date
- How to add days to a date
- How to find the number of days between 2 dates
- How to convert from one timezone to another one
- How to convert a string into a date
- Date formatting
- Math operation inside strings
- Get default value for missing keys
-
Swap values
- Shuffle elements using shuffle()
- How to Quickly Check Whether a String is a Palindrome
- Try else
- Time spent
- Chained function call
- Decapitalize
- Get vowels
- Comma-separated
- Compact
- Capitalize first letters
- Chek whether 2 sets have the same elements
- Find the largest element in a dictionary using max
- Find the index of a substring in a string
- How to generate fake data using Faker
- How to Check Whether a Variable is a Number
- How to Convert two lists into a dictionary
- How to Display a Progress bar in Python using tqdm
- How to Quickly Find the Symmetric Difference of 2 Sets in Python
- How to Quickly Find the Union of 2 Sets in Python
- How to Quickly Find the Intersection of 2 Sets in Python
- How to Quickly Find the Difference Between 2 Sets in Python
- How to Quickly Multiply Elements in a List in Python
- How to Reverse a List Using Negative Slicing in Python
- How to Repeat a List in Python
- How to start implementing a method and finish it later on using Pass statement
- How to generate unique IDs using the uuid module
- Difference between sort() and sorted()
- You can check whether a value is not part of a list using “not in”
- Print the place where a module is located
- You can remove duplicates from a list in a single line
- You can avoid throwing errors when trying to access a non-existent key in a dictionary
- You can build your own iterator
- Difference between copy() and deepcopy()
- Find the most frequent element in a list in just one line
- Sort elements of a string or list based on their frequency
- Count the number of elements using “count” from “itertools”
- Check if 2 strings are anagrams using Counter
- Count the number of elements in a string or list using Counter from “collections”
- You cannot change the value of a global variable just by mentioning it inside a function
- Other values that evaluate to False are None, “False” and the number 0
- Any non-empty list, tuple, or dictionary is evaluated to True
- Any non-empty string is evaluated to True
- At least one condition is met out of many in a single if-statement
- Multiple conditions at a single if-statement
- Condition inside the print function
- Join 2 sets
- Remove all elements from a list, set, or dictionary
- Remove all elements from a list, set, or dictionary
- Get sub-tuples starting from an index
- Get sub-tuples by making jumps
- Get the index of an element in a tuple
- Count the number of times an element appears in a tuple
- You can easily get the last n elements using slice()
- Quickly count the number of times an element appears in a list that satisfies a condition
- Nest a list and a tuple inside a tuple
- We can use negative indexes in tuples too
- Check if a string has all its words starting with an uppercase character
- Check if a string represents a Chinese number
- Check if a string represents a number
- Remove characters from the right based on the argument
- Check if all characters in a string are alphabets
- Check if all characters in a string are either alphabets or numbers
- Check if all characters are white spaces in a string
- Swap cases of characters in a string
- You can define a custom printable version for an object of a class
- You can also redefine the “<” and “==” operators inside your own classes
- You can redefine the “+” operator inside your own classes
- You can call the parent class’s initializer using super() or parent class’s name
- You can define a method that can be called with as many parameters as you want
- Check the memory usage of an object
- You can access private properties even outside their intended scope
- You can define the same method multiple times inside the same scope
- You don’t need to compare the length with 0
- range() starts by default at 0
- range() includes a step parameter that may not be known that much
- map() returns a new object
- filter() returns a new object
- Conditionals statements in lambda should always include the “else” part
- Lambda functions can only be in one line
- Add a value in the first position in a list
- Convert a value into a complex number
- You can convert any data type into a boolean value
- You can convert a boolean value into a number
- You can use boolean values in arithmetic operations
- Swap keys and values of a dictionary
- Get values of a dictionary in a single line
- Get keys of a dictionary in a single line
- Get the value of a character in Unicode
- Check whether 2 strings are anagrams using sorted()
- An “if-elif” block can exist without the else block at the end
- You can turn a set into an immutable set
- Lists, sets, and dictionaries are mutable
- Strings and tuples are immutable
- Integers, floats, strings, booleans, and tuples are immutable
- Find the unique id of a variable using id()
- Check whether a string starts with a particular character without using the index 0
- Check whether a string is larger than another string
- Merge 2 dictionaries quickly
- Difference between == and “is”
- Float division
- Partial Slicing with just the beginning or ending index
- Reverse slicing
- Slice a string using a step function
- Reverse the ordering of a list
- You can separate big numbers with the underscore
- You can use the underscore character anywhere in the name of a variable
- You cannot have 0 as the first digit in a number
- You cannot use an operator at the beginning of the name of a variable
- You cannot use a number at the beginning of the name of a variable
- Print multiple values with a custom separator in between each value
- Print multiple elements in the same line using multiple prints
- Print multiple elements with a single print() statement
- Avoid “trivial” mistakes by using named parameters
- Convert a string into a list of strings
- Find the index of an element in a list or tuple
- Merge dictionaries in a single readable line
- Compare 3 numbers just like in Math
- Repeat strings without looping
- Enumerate related items of the same concept via Enum
- Navigate in a List without using for loops
-
Assign multiple variables in just one line
- “Else” condition inside a “for” loop
- Extract elements from lists
- Get n largest or n smallest elements in a list using the module heapq
- Pass lists as method arguments
- Get all the elements in the middle of the list
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