AI-Learning

import math
print(math.factorial(5))

num = 5
result = "偶数" if num % 2 == 0 else "奇数"
print(result)

my_set = {1, 2, 3}
my_set.remove(2)
print(my_set)

for i in range(5)
print(i)

my_dict = {'x': 10, 'y': 20}
my_dict.update({'y': 30, 'z': 40})
print(my_dict)

filter_even = lambda x: x % 2 == 0
print(filter_even(5))

# ファイル名: sample.txt
# 初期内容:
# ---
# Data Science
# ---
with open('sample.txt', 'r+') as f:
f.seek(5)
f.truncate()
f.seek(0)
print(f.read())

lst = [1, 2, 3]
lst.insert(1, 4)
print(lst)

from collections import deque
dq = deque([1, 2, 3, 4])
dq.extendleft([5, 6])
print(dq)

def add(a, b, *args):
return a + b + sum(args)

print(add(1, 2))
print(add(1, 2, 3, 4))

people = [{"name": "Alice", "age": 30}, {"name": "Bob", "age": 25}, {"name": "Charlie", "age": 35}]
sorted_people = sorted(people, key=lambda x: x["age"])
print([person["name"] for person in sorted_people])

def build_profile(first_name, last_name, age=25, country="Japan"):
return f"{first_name} {last_name}, {age} years old, from {country}"

print(build_profile("Tom", "Smith", country="USA"))

try:
x = int("42")
y = int("hello")
print(x + y)
except ValueError as e:
print("Error:", e)

class MyClass:
pass

class MyClass:
def __init__(self, value):
self.value = value

def double(self):
self.value *= 2

obj = MyClass(5)
obj.double()
print(obj.value)

stack = [1, 3, 5, 7]
stack.append(stack.pop() * 2)
stack.append(stack.pop() + 4)

def counter():
count = 0

def increment():
nonlocal count
count += 1
return count

return increment

incrementer = counter()
print(incrementer())
print(incrementer())

import statistics
data = [10, 20, 30, 40, 50]
mean = statistics.mean(data)
stdev = statistics.stdev(data)
print(round(mean + stdev, 2))

# パッケージ構造:
# package/
# ├── __init__.py
# ├── subpackage/
# │ ├── __init__.py
# │ ├── module2.py
# │ ├── module3.py
# module2.py
from .module3 import greet as hello
print(hello())

# module3.py
def greet():
return "Hello from module3"

class MyClass:
def __init__(self, name):
self.name = name

obj = MyClass("Bob")
del obj.name
print(obj.name)

# sample.txt
# ---
# Line1
# Line2
# ---
with open('sample.txt', 'r') as f:
for line in f:
print(line.strip())

class MyClass:
def __init__(self, value):
self.value = value

def reset(self):
self.value = 0

obj = MyClass(10)
obj.reset()
print(obj.value)

try:
result = "5" + 5
except TypeError as e:
print("Error type:", type(e))

class Parent:
def greet(self):
return "Hello from Parent!"

class Child(Parent):
pass

class GrandChild(Child):
pass

obj = GrandChild()
print(obj.greet())

class MyClass:
class_attribute = "shared value"

class A:
pass

class B(A):
pass

class C(B):
pass

obj = C()
print(isinstance(obj, (A, B)))

import urllib.parse

url = "https://www.example.com/path/to/page?name=John&age=30"
parsed_url = urllib.parse.urlparse(url)
updated_query = urllib.parse.parse_qs(parsed_url.query)
updated_query["name"] = ["Alice"]
new_query = urllib.parse.urlencode(updated_query, doseq=True)
new_url = parsed_url._replace(query=new_query).geturl()
print(new_url)

x = 0
result = "ゼロ以外" if x or x + 5 else "ゼロです"
print(result)

f = open('sample.txt', 'w')
f.write("Test content")
# プログラムがここで終了した場合

class MyClass:
class_variable = "shared"

obj = MyClass()
MyClass.class_variable = "modified"

print(obj.class_variable)

my_set = {1, 2, 3}
print(len(my_set))

class Parent:
def greet(self):
return "Hello from Parent!"

class Child(Parent):
def greet(self):
return super().greet() + " and Child!"

obj = Child()
print(obj.greet())

$ pip install requests
$ python -c "import requests; print(requests.__version__)"