# 12 Python Tips & Tricks You must know

Hello reader! 

In this Blog post, I will share some useful code snippets and functions in Python. Give it a read. 

*Let's get started!*

## 1. Memory

The method `getsizeof` can be used to retrieve the size of any object. Here's an example of the same.

```python
import sys 
number = 100 

print(sys.getsizeof(number)) 
#output: 28
```

## 2. Swapping

The easiest way to swap values without any third variable. This is how you can do it.

```python
a, b = 10, 20
a, b = b, a

#output:
print(a) # 20
print(b) # 10
```

## 3. Anagrams

An *anagram* is a play on words created by rearranging the letters of the original word to make a new word or phrase. we can sort the string values using `sorted` method, which does not modify the original string. Here's an example of the same.

```python
def anagram(first, second):
    return sorted(first)== sorted(second)

res = anagram('heart', 'earth')
print(res) #True
```

## 4. Shuffle

In order to shuffle the elements of a list, `shuffle` method from `random` module can be used. Check out the implementation of the same.

```python
from random import shuffle

my_list = [7, 23, 9, 35]
shuffle(my_list) 

print(my_list) #[35, 7, 9, 23]
```

## 5. Palindrome

A palindrome is a word, number, phrase, or other sequences of characters that reads the same backward as forward. The code snippet will check for palindrome strings.

```python
def check_palindrome(value):
    return value == value[::-1]

res = check_palindrome('level')
print(res) #True
```

## 6. Running Time

`time` module can be used to calculate the actual running time amongst other methods. Refer to the implementation of the same.

```python
import time

start_time = time.time()

num1 = 12
num2 = 15
num3 = num1 * num2
print(num3) #180

end_time = time.time()

total_time = end_time - start_time
print("Time: ", total_time)

# (Time: 0.0005068778991699219)
```

## 7. Most frequent

The `max` method returns the most frequently occurring element of the list.

```python
def most_frequent(my_list):
    return max(set(my_list), key = my_list.count)

nums = [7,10,50,35,10,50,29,10,10,50,4,10]

res = most_frequent(nums) 
print(res) #10
```

## 8. Fetch Vowels

Function to return all the vowels occurring in the given string.

```python
def vowels(string):
    return [each for each in string if each in 'aeiou'] 

res = vowels('youtube')
print(res)  # ['o', 'u', 'u', 'e']
```

## 9. Convert Lists into Dictionary

`zip` method with `dict` helps to convert two lists into a dictionary. Here's an example of the same.

```python
def convert(key, value):
    return dict(zip(key, value))

key = ["apple", "mango", "banana"]    
value = [10, 20, 30]

print(convert(key, value))
#Output: {'apple': 10, 'mango': 20, 'banana': 30}
```

## 10. Print a string k times

The following code snippet will show you how to display a string k times.

```python
value ="Python"; 
k = 3

print(value * k) #PythonPythonPython
```

## 11. Has duplicates

The following function will return False if any duplicate is found in the given list.

```python
def has_duplicates(my_list):
    return len(my_list) != len(set(my_list))

my_list = [7,23,45,7,10,23,93]

res = has_duplicates(my_list) 
print(res) #True
```

## 12. Chained Comparison

In order to perform multiple comparisons in a single line, a chained comparison can be used.

```python
num1 = 27
num2 = 45

print(27 == num1 < num2) #True
```

That's all for this Blog folks and with that, it's a wrap! I hope you found the article useful.

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See you in my next Blog article, Take care!!