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April 11, 2022 11:09
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Cheat Sheet Python TE 2022
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# Cheat Sheet Python TE 2022 | |
# Como mostrabamos por consola en C# | |
# Console.WriteLine(); | |
# En python: | |
print("Hola 4A") | |
# Como declarabamos y asignamos una variable en C# | |
# string miNombre = "Chona"; | |
# En python: | |
miNombre = "Chona" | |
miEdad = 20 | |
# Como leiamos por consola en C# | |
# Console.WriteLine("Ingrese su username: "); | |
# string usrname = Console.ReadLine(); | |
# En python: | |
usrname = input("Ingrese su username: ") | |
print("Hola " + usrname) | |
# Print con multiples parametros: | |
print("Hola", usrname, 20, "jorge") | |
""" | |
Hola | |
esto es un comentario | |
Multilinea | |
""" | |
# Leer datos de tipo int por consola | |
miEdad = int(input("Ingrese su edad: ")) | |
print(miEdad + 10) | |
# La funcion type retorna el tipo de un dato | |
print(type(miEdad)) | |
print(type(miNombre)) | |
# if en C# | |
""" | |
if (miEdad >= 18){ | |
//Pasa algo si miEdad >= 18 | |
} | |
""" | |
# En python: | |
if miEdad >= 18: | |
# Esto pasa dentro del if | |
print("Sos mayor de edad") | |
elif miEdad == 10: | |
print("Sos menor y tenes 10 años") | |
else: | |
# Esto pasa dentro del else | |
print("Sos menor de edad") | |
# Listas | |
estudiantes = ["Fogo", "Agus", "Juli", "Mati", "Ger"] | |
print(estudiantes) | |
print(estudiantes[3]) | |
print(estudiantes[-1]) | |
print("Len de la lista:", len(estudiantes)) | |
# [0 : len(l) - 1] | |
print("------") | |
# for loop | |
for i in range(5): | |
print(i, estudiantes[i]) | |
print("------") | |
for nombre in estudiantes: | |
print(nombre) | |
# Conjuntos | |
print([1, 2, 3, 4, 2, 3]) | |
print(set([1, 2, 3, 4, 2, 3])) | |
print({134, 3245, 231, 134}) | |
print("roberto" in estudiantes) | |
print(231 in {134, 3245, 231, 134}) | |
conjunto = {134, 3245, 231, 134} | |
print(conjunto) | |
print(list(conjunto)) | |
print(sorted(list(conjunto))[::-1]) | |
# Diccionarios | |
telefonos = { | |
"Chona": 1234567890, | |
"Daro": 1987654321, | |
"Facu": 1241412423, | |
"Juli": 7145127635, | |
} | |
print(telefonos) | |
print(telefonos["Daro"]) | |
print("Juli" in telefonos) | |
print("Sofi" in telefonos) | |
print(7145127635 in telefonos) | |
print(telefonos.keys()) | |
print(telefonos.values()) | |
print(7145127635 in telefonos.values()) | |
for key in telefonos.keys(): | |
print(key, telefonos[key]) | |
# Ejemplo Caesars Cypher | |
clave = { | |
"a": "e", | |
"b": "j", | |
"c": "d", | |
"d": "z", | |
"e": "m", | |
"f": "n", | |
"g": "f", | |
"h": "a", | |
"i": "k", | |
"j": "b", | |
"k": "t", | |
"l": "v", | |
"m": "p", | |
"n": "o", | |
"o": "q", | |
"p": "r", | |
"q": "s", | |
"r": "w", | |
"s": "x", | |
"t": "l", | |
"u": "c", | |
"v": "u", | |
"w": "g", | |
"x": "h", | |
"y": "i", | |
"z": "y", | |
} | |
from pprint import pprint | |
pprint(clave) | |
msg = input("Mensaje: ") | |
cifrado = "" | |
for letra in msg: | |
if letra not in clave: | |
cifrado += letra | |
else: | |
cifrado += clave[letra] | |
print(cifrado) | |
# Comprension de listas | |
# primos = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37] | |
# print([primo+1 for primo in primos]) | |
# Comprension de Diccionario | |
clave_reverse = {value: key for key, value in clave.items()} | |
decifrado = "" | |
for letra in cifrado: | |
if letra not in clave_reverse: | |
decifrado += letra | |
else: | |
decifrado += clave_reverse[letra] | |
print(decifrado) |
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