Python >> Tips and Tricks 1

# Split a string
str = "Hello World"
print(str.split())

# Split a string by custom delimiter
str2= "A,B,C"
print(str2.split(','))

# Import module
import os
print(os.getcwd())

# Import module from subdirectory
import sys
sys.path.append('/Path/To/subdirectory')
import mymodule
print(mymodule.myfunc())

# Using relative path to import module
import sys
sys.path.append('./subdirectory')
import mymodule
print(mymodule.myfunc())

# Using from import
from subdirectory import mymodule
print(mymodule.myfunc())

# Aliasing Modules
import os as myos
print(myos.getcwd())

# Create a class
class MyClass:
    def __init__(self, name):
        self.name = name
    def say_hello(self):
        print(f"Hello, {self.name}")

# Create an object
my_object = MyClass("John")
my_object.say_hello()

# Reverse a list
my_list = [1, 2, 3, 4, 5]
my_list.reverse()
print(my_list)

# Reverse a list using slicing operator
my_list = [1, 2, 3, 4, 5]
print(my_list[::-1])

# Accessing Elements in Reversed Order
my_list = ["a", "b", "c"]
for e in reversed(my_list):
    print(e)

# Using kwargs
def myfunc(**kwargs):
    print(kwargs)
myfunc(a=1, b=2, c=3)

# Using kwargs with positional arguments
def myfunc(a, b, c, **kwargs):
    print(kwargs)
myfunc(1, 2, 3, d=4, e=5)

# Using *args
def myfunc(*args):
    print(args)
myfunc(1, 2, 3, 4, 5)

# Using *args with positional arguments
def myfunc(a, b, c, *args):
    print(args)
myfunc(1, 2, 3, 4, 5)

# Throw exception
def myfunc():
    raise Exception("This is an exception")
myfunc()

# Catch exception
try:
    myfunc()
except Exception as e:
    print(e)

# Define custom exception
class MyException(Exception):
    pass
def myfunc2():
    raise MyException("This is an MyException")
myfunc2()

# Catch specific exception
try:
    myfunc2()
except MyException as me:
    print(me)