Python Reference Glossary

x = True
y = False
result = x and y  # False
      

import numpy as np
      

assert x > 0, "x must be positive"
      

async def my_coroutine():
    await some_other_coroutine()
      

result = await my_coroutine()
      

for i in range(5):
    if i == 3:
        break  # exits loop
      

for i in range(5):
    if i == 2:
        continue  # skips this iteration
      

class MyClass:
    pass
      

def my_function():
    print("Hello World")
      

x = 10
del x  # x no longer exists
      

class Animal:
    pass
      

for i in range(5):
    if i == 2:
        continue  
      

z = complex(1, 2)  # 1 + 2i
      

import json  # common library for handling JSON data.
      

def my_function()
    pass
      

del my_variable
      

my_dict = {"name": "Alice", "age": 25}
      

dir(my_dict)  # lists keys and methods of the dict
      

if x < 0:
    print("Negative")
elif x == 0:
    print("Zero")
else:
    print("Positive")
      

if x < 0:
    print("Negative")
else:
    print("Positive")
      

try:
    x = 1 / 0
except ZeroDivisionError:
    print("Cannot divide by zero")
      

exec("print('Hello World')")
      

for i in range(5):
    print(i)
      

from math import sqrt
      

def my_function():
    return "This is a function"
      

global_var = 5
def my_function():
    global global_var
    global_var = 10
      

if x > 0:
    print("Positive")
      

import random
      

if 1 in [1, 2, 3]:
    print("1 is in the list")
      

a = [1, 2]
b = a
print(a is b)  # True
      

square = lambda x: x * x
print(square(5))  # 25
      

len([1, 2, 3])  # 3
      

x = None
      

x = False
result = not x  # True
      

x = True
y = False
result = x or y  # True
      

with open("file.txt", "r") as f:
    content = f.read()
      

if x > 0:
    pass  # TODO: Add code later
      

raise ValueError("Invalid value")
      

def add(a, b):
    return a + b
      

True and False  # returns False
      

class Person:
    pass
      

def greet():
    print("Hello!")
      

import math
      

try:
    x = 1 / 0
except ZeroDivisionError:
    print("Error!")
      

while x < 5:
    x += 1
      

with open("file.txt", "r") as f:
    content = f.read()
      

def generator_function():
    yield 1
    yield 2