Day 9 – Looping

pycache:

pycache is a directory created by Python to store compiled versions of your Python scripts. These files have a .pyc extension and are generated automatically when a Python script is executed.

*Programming Rules: *
1) Known to Unknown
2) Don’t think about entire output
3) Think ONLY about very next step
4) Introduce variable if necessary
5) Observe program closely

Write a program to print 5 consecutive number.

count = 1
if count<=5:
    print(1, end=' ')
    count=count+1 #count = 2
if count<=5:
    print(1, end=' ')
    count=count+1 # count = 3

if count<=5:
    print(1, end=' ')
    count=count+1 # count = 4

if count<=5:
    print(1, end=' ')
    count=count+1 # count = 5

if count<=5:
    print(1, end=' ')
    count=count+1 # count = 6

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if statements, each printing the value 1 followed by a space (end=’ ‘) if count <= 5. After each if block, count is incremented by 1.

1 1 1 1 1

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Alternate implementation:

count = 1
while count <= 5:
    print(1, end=' ')
    count += 1

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If the goal is to repeat this logic in a more concise way, a loop can be used

1 1 1 1 1

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Short form of multiple if is called while.

The print() function uses two optional parameters, sep and end, to control the formatting of its output.

sep(Separator):

Specifies the string inserted between multiple arguments passed to print().

print("Hello", "World", sep=", ")

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Hello, World

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print("Kuhan",'guru','varatha',sep='-')

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Kuhan-guru-varatha

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end(End Character):
Specifies the string appended at the end of the output

print("Hello", end="!")
print("World")

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Hello!World

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Combining sep and end:

print("Python", "is", "fun", sep="-", end="!")

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Python-is-fun!

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Types of argument:

Positional argument:

Arguments passed in the exact order as specified in the function definition.

def add(no1,no2):
    print(no1+no2)
add(10,20)

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This calls the function add, passing 10 as no1 and 20 as no2.

30

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Variable-Length Arguments:

Allow passing a variable number of arguments.

How to get only date from datetime module python:

from datetime import date
current_date=(date.today())

print("Current Date:",current_date)

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Current Date: 2024-11-25

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原文链接：Day 9 – Looping