text stringlengths 37 1.41M |
|---|
str_1 = "lucidProgramming"
str_2 = "LucidProgramming"
str_3 = "lucidprogramming"
def iterativeFindUpper(testStr):
for c in testStr:
if c == c.upper():
return c
return None
# print(iterativeFindUpper(str_1))
# print(iterativeFindUpper(str_2))
# print(iterativeFindUpper(str_3))
def recur... |
"""
Solver class to solve the Queen board using some algorithm
"""
from lib.problem.board import Board
class Solver:
"""
Solving the Queen board by using algorithms defined
Attributes
----------
__board : Board
initial board
__stepsClimbed : int
number of steps taken in the s... |
import os
import cv2
import numpy as np
def read_gt_file(path):
"""Read an optical flow map from disk
Optical flow maps are stored in disk as 3-channel uint16 PNG images,
following the method described in the KITTI optical flow dataset 2012
(http://www.cvlibs.net/datasets/kitti/eval_stereo_flow.php?b... |
# When a class has its own functions, those functions are called methods.
# method _description_ using print statements, prints out the name and age of the animal it’s called on.
class Animal(object):
"""Makes cute animals."""
is_alive = True
def __init__(self, name, age):
self.name = name
self.age = ag... |
"""
The main method for the program used to edit an excel file
of wind turbine information
Author: Patrick Danielson
"""
# Imports
import pandas as pd
import time_generation as tg
import dataframe_manipulation as em
# Method in progress to create new excel file with conditions given
# Input: Excel file
# Output: Cre... |
#
# @lc app=leetcode.cn id=188 lang=python3
#
# [188] 买卖股票的最佳时机 IV
#
# https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-iv/description/
#
# algorithms
# Hard (28.25%)
# Likes: 143
# Dislikes: 0
# Total Accepted: 9.2K
# Total Submissions: 32.4K
# Testcase Example: '2\n[2,4,1]'
#
# 给定一个数组，它的第 i 个元素... |
#
# @lc app=leetcode.cn id=109 lang=python3
#
# [109] 有序链表转换二叉搜索树
#
# https://leetcode-cn.com/problems/convert-sorted-list-to-binary-search-tree/description/
#
# algorithms
# Medium (69.56%)
# Likes: 130
# Dislikes: 0
# Total Accepted: 16K
# Total Submissions: 23K
# Testcase Example: '[-10,-3,0,5,9]'
#
# 给定一个单链表... |
#
# @lc app=leetcode.cn id=814 lang=python3
#
# [814] 二叉树剪枝
#
# https://leetcode-cn.com/problems/binary-tree-pruning/description/
#
# algorithms
# Medium (71.50%)
# Likes: 65
# Dislikes: 0
# Total Accepted: 5.1K
# Total Submissions: 7.1K
# Testcase Example: '[1,null,0,0,1]'
#
# 给定二叉树根结点 root ，此外树的每个结点的值要么是 0，要么是... |
import os
def find_files(suffix, path):
"""
Finds all files beneath path with file name suffix.
Args:
suffix(str): suffix if the file name to be found
path(str): path of the file system
Returns:
a list of paths
"""
ls = os.listdir(path)
files = []
for item in ls:
... |
import os
import Crypto.PublicKey.RSA
import Crypto.Hash.SHA256
'''
Helpful routines for signing and verifying message signatures
'''
def digest(message):
digester = Crypto.Hash.SHA256.new()
digester.update(message)
return digester.digest()
def genKeyPair():
return Crypto.PublicKey.RSA.generate(1024,... |
'''
Replace this file with your implementation from Assignment 1
'''
from UTXO import UTXO
import CryptoUtil
from Transaction import Transaction
class TxHandler(object):
'''
Collect transactions into a mutually valid set that can be used
to mine a new block.
'''
def __init__(self, pool):
... |
# -*- coding: utf-8 -*-
"""
Created on Tue Jul 19 14:35:47 2016
@author: yifanli
"""
import turtle
def main():
#filename = input("Please enter drawing filename: ")
filename = "drawingSingle.txt"
t = turtle.Turtle()
screen = t.getscreen()
file = open(filename,"r")
for line ... |
def make_shirt(size = 'large', shirt_msg = 'I love python'):
"""prints a msg about the shirt size and what it says"""
print(f"The shirt size is {size} and the message on the shirt says {shirt_msg.title()}.")
make_shirt('small','live life to the fullest')
make_shirt(shirt_msg='the sun will rise again', size='me... |
# traking down the speed of a alien that can move at different speeds
alien_o = {'x_position': 0, 'y_position' : 25, 'speed': 'medium'}
print(f"original position: {alien_o['x_position']}")
if alien_o['speed'] == 'slow':
x_increment = 1
elif alien_o['speed'] == 'medium':
x_increment = 2
else :
x_increment ... |
num = input('Please enter the number of times you want to display hello world: ')
for i in range(int(num)):
print('Hello World!')
for x in range(0,11,2):
print(x) |
# This program tells the user if the number
# they enter is a multiple of ten
print("Enter a number and I'll tell you if its a multiple of ten or not")
num = input()
num = int(num)
if num % 10 == 0:
print(f"The number {num} is a multiple of 10.")
else:
print(f"The number {num} is not a multiple of 10.") |
prompt = "Enter the toppings your would like on your pizza: "
active = True
while active:
message = input(prompt)
if message == 'quit':
active = False
else:
print(f"adding {message} to pizza.") |
file_name = 'guest_book.txt'
while True:
name = input("Please enter your name here: ")
if name == 'quit':
break
else:
with open(file_name, 'a') as file_object:
file_object.write(f"{name}\n")
print(f"Hello {name}, you've been added to the guest book.") |
name = 'Bob'
age = 3000
# note this is on big block of code of the if and else if statement
if name == 'Alice':
print('Hi Alice')
elif age < 12:
print('You are not Alice, kiddo')
elif age > 2000:
print('Unlike you, Alice is not an undead, immortal vampire.')
elif age > 100:
print('You are not Alice, ... |
pet_0 = {
'animal' : 'dog',
'breed' : 'husky',
'name' : 'rex',
'owner' : 'miguel',
'age' : 6
}
pet_1 = {
'animal' : 'bird',
'breed' : 'parakeet',
'name' : 'lola',
'owner' : 'sarah',
'age' : 4
}
pet_2 = {
'animal' : 'lizard',
'breed' : 'skink',
'name' : 'larry',
... |
'''
## Summary:
**Name:** Functionalize Maching Learning Procedure
**Author:** Siyang Jing
**Organization:** UNC-CH
**License:** WTFPL
**Reference:**
1. TensorFlow's keras tutorial
1. The author's other codes
1. Relevant numerous papers
**Description:**
This file prepares a function ML
_Input_:
* Parame... |
import random
KREWES = {
'orpheus': ['Emily','Kevin','Vishwaa','Eric','Jay'],
'rex': ['William','Joseph','Calvin','Ethan','Moody'],
'endymion': ['Grace','Nahi','Derek','Jun Tao','Connor']
}
def rando(tn):
print(random.choice(KREWES[tn]))
tn = input("Enter team name: ")
if tn in KREWES:
rando(tn)
el... |
print("******************************************************************")
print("PROGRAM STUDI : ILMU KOMPUTER ")
print("MATA KULIAH : STRUKTUR DATA ")
print("KELAS : 15.2A.31 ")
print("TIM KELOMPOK 3 ")
print(" 1. DIMAS RAMADHAN AGUSTINA (15200384)")
p... |
#!/usr/bin/python3
def uppercase(str):
for word in str:
if ord(word) >= 97 and ord(word) <= 122:
word = chr(ord(word) - 32)
print("{}".format(word), end="")
print("")
|
#!/usr/bin/python3
""" Docstring """
def read_lines(filename="", nb_lines=0):
"""[summary]
Args:
filename (str, optional): [description]. Defaults to "".
"""
with open(filename) as file:
line = 0
for i in file:
line += 1
if nb_lines <= 0 or nb_lines >= lin... |
import random
def playPlusOrMinus():
random.seed()
value = random.randint(1, 100)
count = 0
found = False
while not found:
print ("Try a number : ")
guess = int(input())
count += 1
if guess > value:
print("Too big !")
elif guess < value:
... |
import time
def job_1():
print("Job_1 Started")
start = time.time()
k = 0
for i in range(10000):
for j in range(10000):
k = i + j
end = time.time()
total = end - start
print("Job_1 Completed in",total)
def job_2():
print("Job_2 Started")
start = t... |
""" This file contains functions for transforming tensorflow tensors that
represents images. These are used in order to get better-looking results
when performing feature-visualizations. """
import tensorflow as tf
import math
# TODO: fill in the rest of the functions
def random_param(param_list):
random_index... |
class Data:
def __init__(self, data):
tmp = data.split("|")
self.name = tmp[0]
self.age = tmp[1]
self.grade = tmp[2]
def print_age(self):
print(self.age)
def print_grade(self):
print("%s님 당신의 점수는 %s입니다." % (self.name, self.grade))
data = Data("홍길... |
f1 = open("test.txt", 'w')
f1.write("Life is too shor!")
f1.close()
f2 = open("test.txt", 'r')
print(f2.read())
f2.close()
# close를 명시적으로 할 필요가 없는 with구문
with open("test.txt", 'w') as f1:
f1.write("Life is too short!")
with open("test.txt", 'r') as f2:
print(f2.read())
# 'a' 모드... |
input1 = input("첫번째 숫자를 입력하세요:")
input2 = input("두번째 숫자를 입력하세요:")
total = int(input1) + int(input2)
print("두 수의 합은 %s 입니다" % total) |
def mul(*args):
result = 1
for n in args:
result *= n
print(result)
mul(1,2,3,4,5) |
import math
a = float(input("Enter the value of a"))
if(a>0):
b= float(input("Enter the value of b"))
c=float(input("Enter the value of c"))
Uroot = (b*b)-(4*a*c)
x1= (-b+math.sqrt(Uroot))/(2*a)
x2 = (-b-math.sqrt(Uroot))/(2*a)
print("The value of x1 and x2 is:")
print(x1,x2);
else:
prin... |
String1= "{l} {f} {g}".format(g="Geeks",f="For",l="Life")
print("\nPrint String in order of Keyword: ")
print(String1) |
p =float(input("Enter the principal amount"))
t = float(input("Enter the Time"))
r = float(input("Enter the rate"))
print("The simple interest is ",(p*t*r)/100) |
def largest(arr,num):
max=arr[0]
for i in range(0,num):
if(arr[i]>max):
max=arr[i]
return max
arr=[]
num=int(input("Enter the Array Size"))
print("Enter the Array")
for i in range(0,num):
item=int(input())
arr.append(item)
ans = largest(arr,num)
print(arr)
print("Largest num... |
class Solution(object):
def reverse(self, x):
"""
:type x: int
:rtype: int
"""
digits = 0
xCopy = int(str(x)[:]) #Used to form reversed integer
power = len(str(abs(x))) - 1
for i in range(len(str(x))): #Runs on all digits of x
digits += (ab... |
# -*- coding: utf-8 -*-
'''
Common utility methods for key concept extraction.
'''
from nltk.corpus import stopwords as nltk_stopwords
import unicodedata
def ascii_approximation(s):
"""
Returns an ascii "approximation" to the given unicode string.
@param s: The string to be approximated.
"""
if... |
class MyTime(object):
def __init__(self, time):
self._time = time
self._hours = int(self._time.split(':')[0])
self._minutes = int(self._time.split(':')[1])
self._seconds = int(self._time.split(':')[2])
def get_hours(self):
return self._hours
def get_minutes(self):
... |
#!/usr/bin/env python
# coding: utf-8
# <div class="licence">
# <span>Licence CC BY-NC-ND</span>
# <span>François Rechenmann & Thierry Parmentelat</span>
# <span><img src="media/inria-25-alpha.png" /></span>
# </div>
# # `next_start_codon` and `next_stop_codon`
# Let us now remember the algorithm that searches f... |
import math
i=0
num=0
'''
while i < 10 :
i+=1
print("MisionTIC")
while i<10:
i+=1
print(i)
'''
'''Realiza un programa que muestre los numeros impares
que hay del 1 al 20 y final muestre la suma de todos ellos'''
|
"""This file defines the model for a user"""
from datetime import datetime
from werkzeug.security import check_password_hash
from mongoengine import fields, Document, DoesNotExist
class User(Document):
"""Defines a user model for the database
Attributes:
email: The unique email used to regi... |
"""Code for solving a case of one-dimensional heat conduction in a rod
with internal heat generation using 1D quadratic elements"""
from __future__ import division
import numpy as np
from pylab import*
"""Inputs"""
d = float(raw_input("Enter the diameter of the cross-sectional area of the rod(mm): "))
L = float(raw_in... |
"""
@Author: huuuuusy
@GitHub: https://github.com/huuuuusy
系统： Ubuntu 18.04
IDE: VS Code 1.37
工具： python == 3.7.3
介绍： 熟悉pandas基本功能，参考《利用Python进行数据分析》5.2
"""
import pandas as pd
from pandas import Series, DataFrame
import numpy as np
"""
重建索引
"""
print('Example 1:')
obj = pd.Series([4.5, 7.3, -5.3, 3.6], index=['d', ... |
"""
@Author: huuuuusy
@GitHub: https://github.com/huuuuusy
系统： Ubuntu 18.04
IDE: VS Code 1.36
工具： python == 3.7.3
介绍： 介绍Python集合，参考《利用Python进行数据分析》3.1.5
"""
"""
集合
"""
# 集合使用set()函数，其无序且元素唯一
print('Example 41:')
print(set([2, 2, 2, 1, 3, 3])) # {1, 2, 3}
# 集合并集
print('Example 42:')
a = {1, 2, 3, 4, 5}
b = {3, 4, 5, ... |
import time
# 插入排序
def insertion_sort(data):
move_count = 0 # 统计移动次数
circle_count = 0 # 统计循环次数 for test
n = len(data)
for i in range(1, n):
for j in range(i, 0, -1):
circle_count += 1 # for test
if data[j] < data[j-1]:
data[j], data[j-1] = data[j-1],... |
class Solution:
def isPalindrome(self, s):
"""
给定一个字符串，验证它是否是回文串，只考虑字母和数字字符，可以忽略字母的大小写。
说明：本题中，我们将空字符串定义为有效的回文串
示例 1: 输入: "A man, a plan, a canal: Panama"， 输出: true
:type s: str
:rtype: bool
"""
import re
pat = re.compile(r'[\W_]')
res ... |
# def tower_builder(n_floors):
# # 方法一
# # list_res = []
# # for i in range(1, 2*n_floors, 2):
# # #temp = (i+1)//2
# # list_res.append((n_floors-(i+1)//2)*" " + i * "*"+ (n_floors-(i+1)//2)*" ")
# # return list_res
# # 方法二
# #return [(n_floors-(i+1)//2)*" " + i * "*"+ (n_floors-... |
#
# def quick_sort(arrys, left, right):
# if left >= right:
# return arrys
#
# key = arrys[left]
# # 将左边第一位定位基准数，以此数将序列分为两部分
# low = left
# high = right
# while left != right:
# # 从最右边开始查（一定要从最右边开始查），查找比基准值小的数
# while left < right and arrys[right]>=key:
# righ... |
class MinStack:
def __init__(self):
"""
initialize your data structure here.
"""
self.head = -1
self.data = []
def push(self, x):
"""
:type x: int
:rtype: void
"""
# if self.head == -1:
self.data.append(x)
self.hea... |
def longestchildlist(arr):
arr2 = arr[::-1]
res = []
for i in range(1, len(arr)):
b = []
for v in arr2[i-1:]:
if len(b):
if v < b[0]:
b.insert(0, v)
else:
b.insert(0, v)
if len(b) > len(res):
res... |
class Solution:
def searchInsert(self, nums, target):
"""
:type nums: List[int]
:type target: int
:rtype: int
"""
if not nums.count(target):
nums.append(target)
nums.sort()
return nums.index(target)
if __name__ == "__main__":
lis ... |
class Solution:
def strStr(self, haystack, needle):
"""
:type haystack: str
:type needle: str
:rtype: int
"""
if needle is not '':
if needle in haystack:
return haystack.index(needle)
else:
return -1
else... |
class Solution:
def lengthOfLastWord(self, s):
"""
给定一个仅包含大小写字母和空格 ' ' 的字符串，返回其最后一个单词的长度。
如果不存在最后一个单词，请返回 0 .
说明：一个单词是指由字母组成，但不包含任何空格的字符串。
:type s: str
:rtype: int
"""
res = s.strip().split(' ')
if any(res):
return len(res[-1])
... |
#comment added for git push practice
dashboard = ['-'for i in range(9)]
game_is_running = True
current_player = 'X'
winner = None
def play_game():
global game_is_running
global winner
show_board()
while game_is_running:
handle_turn(current_player)
... |
# Selection sort is proces of sorting an array.
# In Selection sort, we take the smallest value in the array and swap it with the first element in the unsorted part.
def selectionSort(list):
for i in range(len(list)-1):
minvalue = i
for j in range(i+1,len(list)):
if(list[minvalue] > li... |
import os
import random
# Defining the suits and ranks of a given card
suits = ["Spades", "Hearts", "Diamonds", "Clubs"]
ranks = ["Ace", 2, 3, 4, 5, 6, 7, 8, 9, 10, "Jack", "Queen", "King"]
player_hands = []
player_bids = []
player_chips = []
def create_deck():
# Create a full deck with 52 cards
deck = []
... |
class user(object):
def __init__(self,name,email,password):
self.name = name
self.email = email
self.password = password
self.friends_list = []
self.posts = []
def add_friend(self,email1,friends_list):
self.email1 = email1
self.friends_list.append(self.email1)
print (self.name +" had added "+self... |
import numpy as np
import matplotlib.pyplot as plt
import ml.linear_regression as lire
from ml.gradient_descent import gradient_descent
data = np.loadtxt("ml_course_material/machine-learning-ex1/ex1/ex1data1.txt", delimiter=",")
(m, feature_length_with_result) = data.shape
x = data[:, 0].reshape((m, feature_length_... |
import numpy as np
import ml.utils as utils
def feed_forward(X, Thetas):
"""
Feeds the inputs X through neural network represented by Theta matrices.
:param X: inputs: m x n (m examples, n features)
:param Thetas: Theta matrix for each layer
:return: matrix of shape m x #neurons_in_output_layer
... |
"""Calculate the equation inside the list in order of operation.
The first and last item will always be a number. Numbers are
separated by a + or * symbol. All items are in individual strings.
Examples:
>>> calculate(["6", "+", "8", "*", "12", "+", "47"])
149
>>> calculate(["1", "+", "1", "+", "1"])... |
def print_node_at_depth(root, depth):
def wut_depth(root, depth, current_d):
# base case
if current_d == depth:
print node
else:
current_d += 1
wut_depth(root.left, depth, current_d)
wut_depth(root.right, depth, current_d)
|
def calc_change(n):
penny = 1
nickle = 5
dime = 10
quarter = 25
coins = {
quarter: 0,
dime: 0,
nickle: 0,
penny: 0
}
while n > 0:
if n >= quarter:
n -= 25
coins[quarter] += 1
elif n >= dime:
... |
"""
Write a function that reverses a string.
Use as much memory as you want.
"""
def reverse_str(string):
lst = list(string)
current = len(lst) - 1
new_lst = []
while current > -1:
new_lst.append(lst[current])
current -= 1
#print new_lst
return "".join(new_lst)
print r... |
'''
The classical introductory exercise. Just say "Hello, World!".
"Hello, World!" is the traditional first program for beginning programming in
a new language or environment.
The objectives are simple:
Write a function that returns the string "Hello, World!".
Run the test suite and make sure that it succeeds.
Submi... |
# Written by Eric Martin for COMP9021
#
# Prompts the user for an arity (a natural number) n and a word.
# Call symbol a word consisting of nothing but alphabetic characters
# and underscores.
# Checks that the word is valid, in that it satisfies the following
# inductive definition:
# - a symbol, with spaces al... |
# 1/1 count_web_words
# 1/1 read_url
# 1/1 string_to_words
# 1.5/2 count_words
# Bug as noted! You could remove the empty words here
# 2/2 print_descending
# 2/2 comments and style
#
# GRADE: 7.5/8
# Nice work!
import urllib.request as web
def get_input():
input_url = input("What url do you want to use?")
re... |
"""
anagrams.py
What anagrams can be found among 1000 common words in US English?
To find out, debug the definition of the find_anagrams function below.
In addition to fixing the code, add two comments as follows:
# BUG: Show where you found the bug and explain how you found it.
# FIX: Briefly explain in English how y... |
import math
def distance (x1, y1, x2, y2):
"""
this fuction finds the distance between two points
Parameters:
"""
distance = math.sqrt(((x2 - x1)**2) + ((y2 - y1)**2))
return distance
print(distance(0, 0, 4, 0))
def tri_perimeter(x1, y1, x2, y2, x3, y3):
side1 = d... |
import random
def weather ():
chance = random.random()
if chance < 0.66:
print("SNOW")
elif chance < 0.99:
print ("SUNNY DAY")
else:
print("RAINS CATS AND DOGS!")
def loaded():
chance = random.random()
if chance < 0.25:
roll = 1
elif chance < 0.50:
... |
VOWELS = "aeiuo"
def piglatin(word):
return word[1:] + word[0] + "ay"
def main():
print(piglatin("python"))
print(piglatin("Janet"))
print(piglatin("string"))
if __name__ == "__main__":
main()
|
import re
def get_matching_words(regex):
words = ["aimlessness", "assassin", "baby", "beekeeper", "belladonna", "cannonball", "crybaby", "denver", "embraceable", "facetious", "flashbulb", "gaslight", "hobgoblin", "iconoclast", "issue", "kebab", "kilo", "laundered", "mattress", "millennia", "natural", "obsessive", "par... |
def layered(x):
(arr, multiplier) = x
newarr = []
for index in arr:
insert = []
one = index * multiplier
while one>0:
insert.append(1)
one = one - 1
newarr.append(insert)
print newarr
return newarr
x = layered(([2,4,5],3))
|
'''
Assignment: Names
Part I:
Given the following list:
'''
students = [
{'first_name': 'Michael', 'last_name' : 'Jordan'},
{'first_name' : 'John', 'last_name' : 'Rosales'},
{'first_name' : 'Mark', 'last_name' : 'Guillen'},
{'first_name' : 'KB', 'last_name' : 'Tonel'}
]
'''
Copy
Create a program ... |
# #Multiples - Part I
for odd in range(1,1000,2):
print odd
# #Multiples - Part II
for multiple in range(5,1000001,5):
print multiple
#Sum List
sum = 0
arr = [1,2,5,10,255,3]
for i in arr:
sum+=i
print sum
#Average List
sum = 0
arr = [1,2,5,10,255,3]
for i in arr:
sum+=i
print sum/len(arr)
|
import matplotlib.pyplot as plt
import numpy as np
x = [1,2,3,4,5,6,7]
y_product1 = [100,200,230,120,500,210,400]
y_product2 = [212,323,124,213,102,222,320]
plt.plot(x,y_product1)
plt.plot(x,y_product2)
plt.xlabel("days of week")
plt.ylabel("sales of the day")
plt.legend(["y_product1","y_product2"])
p... |
blocks = [
[
'bamba is awesome',
'this is it',
'programming is awesome'
],
[
"i'm a beast",
]
]
for i, block in enumerate(blocks):
for j, phrase in enumerate(block):
if 'awesome' in phrase:
block[j] = phrase.replace('awesome', 'unbelievable')
... |
"""Reversed.
OBS: não confunda com a função reverse() que estudamos nas listas
reverse() é uma função das listas somente
A relação é parecida com sort() e sorted()
Sua função é inverter o iterável
A função reversed() retorna um iterável chamado List Reverse Iterator
Pode usar em list, tuple, set, dicioná... |
import matplotlib.pyplot as plt # rename as plt
x = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
y = [2, 3, 5, 3, 4, 7, 9, 7, 10, 8]
# Definido título do gráfico
plt.title("Título do meu gráfico") # define o título
# Definindo nome aos eixos do gráfico:
plt.xlabel("Eixo X") # eixo x
plt.ylabel("Eixo Y") # eixo y
plt.plot(x,... |
# Dicas de padrão de código bem escrito do Pep8
"""
[1] - CamelCase para nome de classes.
class CalculadoraCientifica:
pass # pass para não fazer nada mas não gerar erro por falta de código
[2] - Utilize nomes em minusculo, separados por underline para funções ou
variáveis
def soma(a,b):
return a+b
[3] - ... |
"""Dictionary Comprehension."""
"""
Comprehension com uso em dicionários
Pense no seguinte:
tupla é (), lsita é [], set é {}
Mas dicionário tem chave e valor:
dicionario = {'a': 1, 'b': 2}
Sintaxe:
{chave:valor for valor in iterável}
Em lista seria [valor for valor in iterável]
"""
# Exemplo 1:
numeros =... |
"""
POO - Propriedades (Properties).
Getters e setters em conjunto da classe usada na aual de abstração e encaps..
Essa refatorando a classe anterior utilizando propriedades (decorators)!!
@property para atributos, como se fosse um método
Mas o acesso ao atributo é sem os paranteses!!
Também do @atributo.setter, fun... |
"""
Type hinting.
É a ideia de dar a ideia do tipo de dado recebido no parametro e do tipo de
retorno.
Entra no Python 3.5
Já faço uso desde o início do curso.
É importante entender a tipagem dinâmica
Ajuda e muito aos desenvolvedores e a IDE para ter um controle e visão melhor
do que está aconte... |
"""
Operador Walrus.
O operador Walrus permite fazer a atribuição e retorno em uma única expressão
Apenas para garantir maior patricidade, não há nada novo
Sintaxe:
variavel := expressão
Obs: precisa estar utilizando Python3.8+ para tal (atual 3.8.2)
Quando você deve ou não usar este oepraodr:
Quando você ... |
"""
Teste de memória com Generators.
"""
from typing import List
def fib_lista(max: int) -> List[int]:
"""Retorna a sequencia de fibonacci."""
nums = []
a, b = 0, 1
while (len(nums)) < max: # Eqnt quantidade de elem. em nums < max
nums.append(b) # Insere o elemento b na lista nums
... |
"""
Forçando tipos de dados com decoradores.
Vamos ter uma aplicação prática do mesmo
Mas com o objetivo de forçar os tipos de dados com os decoradores
"""
from typing import List
def forca_tipo(*tipos):
def decorador(funcao):
def converte(*args, **kwargs):
novo_args = []
fo... |
"""
Ordered dict, do módulo Collections
"""
dicionario = {'a': 1, 'b': 2, 'c': 3}
for chave, valor in dicionario.items():
print(f'chave {chave}; valor{valor}')
# Aqui manteve a ordem, mas isso não é garantido, para isso se tem o Ordered
from collections import OrderedDict
dicionario = OrderedDict({'a': 1, 'b'... |
"""Generators.
O que seria o "tuple comprehension" é chamado de generator expression
Por isso tal coisa não foi estuda no collections
Sintaxe:
Igual ao de list, mas ao invpes de [] usa ()
Ou seja, deixar tudo entre () indica estar usando generators
A partir de conversão e uso, aqui o dado tbm é apagado d... |
"""
Escrevendo em arquivos CSV
Temos a mesma ideia que na leitura, utilização de duas formas:
writer() -> utiliza um escritor para csv
writerow() -> escreve uma linha
DictWriter -> Utiliza um dicionário para escrever
A forma de abertura varia conforme o contexto, aqui foi usado w por exemplific
"""
... |
"""Decatorators com diferentes assinaturas.
# Para situações de dois parametros quando se espera um, temos o uso de:
Decorator pattern
É a ideia de utilizar os *args e **kwargs nos parametros
Permitindo essa flexibilidade
Lembrando que args lançam uma tupla e kwargs um dicionário
"""
# Relembrando:
d... |
'''
Tipo Booleano, lá do George Boole
2 constantes: True e False
Obs: sempre como inicial maiúscula
'''
var1 = True
var2 = False
# Padrão:
print (var1)
# Negação:
print(not var1)
# Or (operação binária):
print (var1 or var2) # Se um é verdadeiro, retorna True. Só retorna falso se ambos False
# And (operação bi... |
"""
Named Tuples, o módulo collections
Recap tupla:
tupla = 1, 2, 3
É uma ideia de "tupla nomeada", são tuplas diferenciadas, em que especificamos
um nome para a mesma e também parâmetros
Fica bastante próximo de uma ideia de struct de C e tal, porém modificado no acesso
Pois você define nome e todos os tipos dentr... |
# analisando o crescimento da população brasileiro - datasus
# Utilizando o arquivo .csv salvo na pasta
# o arquivo csv atual está separado os dados por ";"
import matplotlib.pyplot as plt
dados = open("populacao_brasileira.csv").readlines()
x = [] # armazena os anos
y = [] # armazena a população
for i in r... |
#!/usr/bin/python
print "Content-Type: text/html\n"
f=open("lit.txt")
r= f.read()
f.close()
print "<!DOCTYPE html>"
print '''<html><head><title>Storify</title><style> body {background-size:100%}</style></head><body background = "https://media2.giphy.com/media/nYmXj4wLAgd7W/giphy.gif">'''
print '''<a href="lit.txt">lit<... |
class Node ( object ):
def __init__ (self , v, n):
self.value = v
self.next = n
class LinkedList ( object ):
def __init__ ( self ):
self.firstLink = None
def add (self , newElement ):
self.firstLink = Node ( newElement , self.firstLink )
def test (self , testValue ):
currentLink = self.firstLink
while c... |
import math
x1 = int(input('Enter x1--->'))
y1 = int(input('Enter y1--->'))
x2 = int(input('Enter x2--->'))
y2 = int(input('Enter y2--->'))
d1 = (x2-x1) * (x2-x1);
d2 = (y2-y1) * (y2-y1);
res = math.sqrt(d1+d2)
print('Distance between two points:', res);
|
#Escribir un programa que pida al usuario un número entero positivo y muestre por pantalla la
#cuenta atrás desde ese número hasta cero separados por comas.
numero= int(input("Introduzca un numero entero positivo: \n"))
while numero<0 :
print("ERROR. Numero negativo")
numero= int(input("Introduzca un numero e... |
# Escribir un programa que guarde en una variable el diccionario {'Euro':'€', 'Dollar':'$', 'Yen':'¥'},
# pregunte al usuario por una divisa y muestre su símbolo o un mensaje de aviso si la divisa no está en el diccionario.
diccionario= {'Euro':'€', 'Dollar':'$', 'Yen':'¥'}
divisa= input("Introduce una divisa: ")
pri... |
#Almacenar las matrices A(1 2 3) B(-1 0)
# (4 5 6) ( 0 1)
# ( 1 1)
#en una lista y muestre por pantalla su producto.
#Nota: Para representar matrices mediante listas usar listas anidadas, representando cada vector fila en una lista.
# Las tuplas son como las li... |
#Escribir un programa que almacene las asignaturas de un curso (por ejemplo Matemáticas, Física, Química, Historia y Lengua) en una lista,
#pregunte al usuario la nota que ha sacado en cada asignatura, y después las muestre por pantalla con el mensaje En <asignatura> has sacado <nota>
#donde <asignatura> es cada una ... |
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