Python Statements – Multiline, Simple, and Compound Examples

Python statements are the code instructions that are executed by the Python interpreter.


Python Statements Examples

Let’s look at some simple statement examples.

count = 10  # statement 1

class Foo:  # statement 2
    pass    # statement 3

Python Multi-line Statements

Python statements are usually written in a single line. The newline character marks the end of the statement. If the statement is very long, we can explicitly divide into multiple lines with the line continuation character (\).

Let’s look at some examples of multi-line statements.

message = "Hello There.\nYou have come to the right place to learn Python Programming.\n" \
          "Follow the tutorials to become expert in Python. " \
          "Don't forget to share it with your friends too."

math_result = 1 + 2 + 3 + 4 + \
              5 + 6 + 7 + 8 + \
              9 + 10

print(message)
print(math_result)
Python Statements
Python Statements

Python supports multi-line continuation inside parentheses ( ), brackets [ ], and braces { }. The brackets are used by List and the braces are used by dictionary objects. We can use parentheses for expressions, tuples, and strings.

message = ("Hello\n"
           "Hi\n"
           "Namaste")

math_result = (1 + 2 + 3 + 4 +
               5 + 6 + 7 + 8 +
               9 + 10)

prime_numbers_tuple = (2, 3, 5, 7,
                       11, 13, 17)

list_fruits = ["Apple", "Banana",
               "Orange", "Mango"]

dict_countries = {"USA": "United States of America", "IN": "India",
                  "UK": "United Kingdom", "FR": "France"}

Can we have multiple statements in a single line?

We can use semicolon (;) to have multiple statements in a single line.

x = 1; y = 2; z = 3

Python Simple Statements

Python simple statement is comprised in a single line. The multiline statements created above are also simple statements because they can be written in a single line. Let’s look at some important types of simple statements in Python.


1. Expression Statement

i = int("10")  # expression is evaluated and the result is assigned to the variable.

sum = 1 + 2 + 3  # statement contains an expression to be evaluated first.

2. Assignment Statement

count = 10  # value is assigned to the variable, no expression is evaluated

message = "Hi"

3. Assert Statement

assert 5 < 10
assert (True or False)

4. pass Statement

def foo():
    pass  # pass statement

5. del Statement

name = "Python"
del name  # del statement

6. return Statement

def foo():
    return 10  # return statement

7. yield Statement

def yield_statement():
    yield 'Statement 1'  # yield statement

8. raise Statement

def raise_example():
    raise TypeError('Exception Example')  # raise statement

9. break Statement

numbers = [1, 2, 3]


for num in numbers:
    if num > 2:
        break  # break statement

10. continue Statement

numbers = [1, 2, 3]


for num in numbers:
    if num > 2:
        continue  # continue statement
    print(num)

11. import Statement

import collections
import calendar as cal
from csv import DictReader

12. global Statement

name = "Python"


def global_example():
    global name  # global statement
    name = "Flask"


print(name)  # prints Python
global_example()
print(name)  # prints Flask

13. nonlocal Statement

def outer_function():
    scope = "local"

    def inner_function():
        nonlocal scope  # nonlocal statement
        scope = "nonlocal"
        print(scope)

    inner_function()
    print(scope)


outer_function()

Python Compound Statements

Python compound statements contains group of other statements and affect their execution. The compound statement generally span across multiple lines. Let’s briefly look into a few compound statements.


1. if Statement

if 5 < 10:
    print("This will always print")
else:
    print("Unreachable Code")

2. for Statement

for n in (1, 2, 3):
    print(n)

3. while Statement

count = 5
while count > 0:
    print(count)
    count -= 1

4. try Statement

try:
    print("try")
except ValueError as ve:
    print(ve)

5. with Statement

with open('data.csv') as file:
    file.read()

6. Function Definition Statement

A python function definition is an executable statement. Its execution binds the function name in the current local namespace to a function object. The function is executed only when it’s called.

def useless():
    pass

7. Class Definition Statement

It’s an executable statement. The class definition defines the class object.

class Data:
    id = 0

8. Coroutines Function Definition Statement

import asyncio

async def ping(url):
    print(f'Ping Started for {url}')
    await asyncio.sleep(1)
    print(f'Ping Finished for {url}')

Conclusion

Python statements are used by the Python interpreter to run the code. It’s good to know about the different types of statements in Python.


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