Copia de Crea tu propia funcion y numpy.ipynb

{"nbformat":4,"nbformat_minor":0,"metadata":{"colab":{"provenance":[{"file_id":"1-9MuPna7T6tjvraJ51zBc84Kj9X1yV_A","timestamp":1686799149810}]},"kernelspec":{"name":"python3","display_name":"Python 3"},"language_info":{"name":"python"}},"cells":[{"cell_type":"markdown","source":["##Crea tu propia función\n","La primera parte de esta actividad consiste en crear una función que trunque un número.\n","Primero crearemos la función t que trunca un número a 4 cifras .\n","\n","Después crearemos la función \"trunca\" que trunca un número a la cantidad de cifras que se le indique.\n","\n","Tip: Puedes revisar el notebook de la clase del lunes ya que ya hicimos algo parecido"],"metadata":{"id":"6fREkF7AaDhS"}},{"cell_type":"markdown","source":["Primero veamos como podemos truncar 1.499999 a 1.499, sigue las instrucciones, la función la crearemos más adelante"],"metadata":{"id":"Apbv7vxHa_Kw"}},{"cell_type":"code","source":[" x=1.499999 #crea tu variable x igual a 1.499999\n","x=str(x) #convierte a str tu variable x usando la función correcta\n","type(x)#utiliza type para ver que x sí sea str, si no lo es, corrije lo que te faltó en el renglón anterior"],"metadata":{"id":"rtiGYC7VaC4s","colab":{"base_uri":"https://localhost:8080/"},"executionInfo":{"status":"ok","timestamp":1686799441651,"user_tz":360,"elapsed":174,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}},"outputId":"ff6ee3d6-71c9-4c6c-fb43-f8bb281a04e6"},"execution_count":4,"outputs":[{"output_type":"execute_result","data":{"text/plain":["str"]},"metadata":{},"execution_count":4}]},{"cell_type":"code","source":["x=list(str(x)) #Convierte x a una lista usando la función que me convierte str o tuplas a listas\n","print(x) #imprime x para ver que sí sea una lista donde cada digito es un elemento, si no lo es corrije lo que te faltó en el renglón anterior"],"metadata":{"id":"AGkaZe9SbSZc","colab":{"base_uri":"https://localhost:8080/"},"executionInfo":{"status":"ok","timestamp":1686799442915,"user_tz":360,"elapsed":163,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}},"outputId":"1c5c45f7-791c-4279-c311-2bb3595290ea"},"execution_count":5,"outputs":[{"output_type":"stream","name":"stdout","text":["['1', '.', '4', '9', '9', '9', '9', '9']\n"]}]},{"cell_type":"code","source":["x=x[:5] #Utiliza la función adecuada para borrar todos los digitos a partir del de indice 5\n","print(x) #imprime x para ver que sí funcionó (y te quedó el 1.499 separado)"],"metadata":{"id":"w8nGDZcKb-8G","colab":{"base_uri":"https://localhost:8080/"},"executionInfo":{"status":"ok","timestamp":1686799564824,"user_tz":360,"elapsed":14,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}},"outputId":"a99ddccf-1c87-4170-d7d9-898a2f1f2d9d"},"execution_count":6,"outputs":[{"output_type":"stream","name":"stdout","text":["['1', '.', '4', '9', '9']\n"]}]},{"cell_type":"code","source":["x=\"\".join(x)#regresalo a un solo string usando join\n","print(x) #imprime x para ver que sí se haya juntado\n","type(x) #verifica que la x sea un string usando la función que nos dice el tipo de variable"],"metadata":{"id":"R1NO2d7Xcglp","colab":{"base_uri":"https://localhost:8080/"},"executionInfo":{"status":"ok","timestamp":1686799613411,"user_tz":360,"elapsed":158,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}},"outputId":"ebd1621d-4320-45ca-ac2c-6c1af300a118"},"execution_count":7,"outputs":[{"output_type":"stream","name":"stdout","text":["1.499\n"]},{"output_type":"execute_result","data":{"text/plain":["str"]},"metadata":{},"execution_count":7}]},{"cell_type":"code","source":["float(x)#Cambia la x a float"],"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"zMEGxYuzc6N-","executionInfo":{"status":"ok","timestamp":1686799635779,"user_tz":360,"elapsed":159,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}},"outputId":"92ed966c-118e-4bd5-eb8a-8122030d77e4"},"execution_count":8,"outputs":[{"output_type":"execute_result","data":{"text/plain":["1.499"]},"metadata":{},"execution_count":8}]},{"cell_type":"markdown","source":["Ahora crearemos la función t, toma en cuenta lo siguiente:\n","1. Debes definir la función t usando def y la sintaxis vista en clase, debe tener un argumento (podemos llamarle x)\n","2. Dentro de la función debes de:\n","\n","*   convertir x a string\n","*   luego convertirlo a lista\n","*   borrarle los elementos a partir del de indice 5\n","*   volver a juntar los elementos usando join\n","*   convertir x a float\n","*   terminar la función con return x\n","\n","Esta función truncará el número a 4 cifras siempre que no sea mayor o igual a 10000\n"],"metadata":{"id":"8rjBr0BKdKwa"}},{"cell_type":"code","source":["def t(x):\n","  xstr=str(x)\n","  xlist =list(xstr)\n","  if x >=10000:\n","    return x\n","  xlist=xlist[:5]\n","  xstr=''.join(xlist)\n","  x=float(xstr)\n","  return x"],"metadata":{"id":"TKaVRqyldWaE","executionInfo":{"status":"ok","timestamp":1686800020473,"user_tz":360,"elapsed":149,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}}},"execution_count":12,"outputs":[]},{"cell_type":"code","source":["t(1.29292929) #utiliza tu función t para truncar el número 1.29292929 y ve que funcione"],"metadata":{"id":"Zv6v3-G3f-A0","colab":{"base_uri":"https://localhost:8080/"},"executionInfo":{"status":"ok","timestamp":1686800044476,"user_tz":360,"elapsed":166,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}},"outputId":"cd7b78d4-9eb6-4147-f9d6-99280e5e5345"},"execution_count":13,"outputs":[{"output_type":"execute_result","data":{"text/plain":["1.292"]},"metadata":{},"execution_count":13}]},{"cell_type":"markdown","source":["Ahora vamos a mejorar la función creando la función trunca:\n","Copia y pega la celda donde definiste la función t, cambiale el nombre a trunca y agrega otro argumento al lado de la x,\n","puedes ponerle y.\n","\n","Ese segundo argumento será el número de cifras que deseas, dentro de tu función cambia el 5 por y+1.\n","Debes ponerle más 1 por que el punto decimal ocupa un lugar.\n","Después revisa que funcione la función escribiendo trunca(1.2929292929,7) debería darte 1.292929"],"metadata":{"id":"T-ZkBqDzgz5a"}},{"cell_type":"code","source":["def trunca(x, y):\n","  xstr=str(x)\n","  xlist =list(xstr)\n","  if x>=y:\n","    return 'Error: x debe ser menor que y'\n","  if x>=10000:\n","    return x\n","  xlist=xlist[:y+1]\n","  xstr=''.join(xlist)\n","  x=float(xstr)\n","  return x"],"metadata":{"id":"BoY6oT4wgwUj","executionInfo":{"status":"ok","timestamp":1686800399401,"user_tz":360,"elapsed":145,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}}},"execution_count":15,"outputs":[]},{"cell_type":"code","source":["trunca(1.2929292929,7)"],"metadata":{"id":"RBA9lhZtW77i","colab":{"base_uri":"https://localhost:8080/"},"executionInfo":{"status":"ok","timestamp":1686800420896,"user_tz":360,"elapsed":159,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}},"outputId":"171bc8bf-53a9-4459-e065-5679cbe36b0b"},"execution_count":16,"outputs":[{"output_type":"execute_result","data":{"text/plain":["1.292929"]},"metadata":{},"execution_count":16}]},{"cell_type":"markdown","source":["Numpy"],"metadata":{"id":"XZaJXZu_W8Iy"}},{"cell_type":"markdown","source":["Es una librería (abreviatura de numeric python). Nos permite usar arreglos (matrices) y por lo tanto realizar operaciones que no se podrían hacer con listas"],"metadata":{"id":"-DcxJy13awbz"}},{"cell_type":"code","source":["import numpy as np #Usualmente se importa como np (para no tener que repetir la palabra numpy cada que usemos una de sus funciones)"],"metadata":{"id":"tW4XRweEaycD","executionInfo":{"status":"ok","timestamp":1686800471294,"user_tz":360,"elapsed":149,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}}},"execution_count":17,"outputs":[]},{"cell_type":"markdown","source":["Si tenemos dos listas y queremos dividir sus elementos no se puede directamente. Ejemplo:"],"metadata":{"id":"Tm-yXOAza_Hz"}},{"cell_type":"code","source":["L1=[1,2,3]\n","L2=[4,4,9]"],"metadata":{"id":"Pb4h2b2ba8X7","executionInfo":{"status":"ok","timestamp":1686800473643,"user_tz":360,"elapsed":170,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}}},"execution_count":18,"outputs":[]},{"cell_type":"code","source":["L1/L2 #Veamos como da error al dividir dos listas"],"metadata":{"colab":{"base_uri":"https://localhost:8080/","height":167},"id":"mUNs0ZWIa9up","executionInfo":{"status":"error","timestamp":1686800476472,"user_tz":360,"elapsed":349,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}},"outputId":"f27bf4ad-e406-4a2b-860d-8295d9290122"},"execution_count":19,"outputs":[{"output_type":"error","ename":"TypeError","evalue":"ignored","traceback":["\u001b[0;31m---------------------------------------------------------------------------\u001b[0m","\u001b[0;31mTypeError\u001b[0m                                 Traceback (most recent call last)","\u001b[0;32m<ipython-input-19-175271ff36f6>\u001b[0m in \u001b[0;36m<cell line: 1>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mL1\u001b[0m\u001b[0;34m/\u001b[0m\u001b[0mL2\u001b[0m \u001b[0;31m#Veamos como da error al dividir dos listas\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m","\u001b[0;31mTypeError\u001b[0m: unsupported operand type(s) for /: 'list' and 'list'"]}]},{"cell_type":"markdown","source":["Con numpy podemos crear dos arreglos y luego dividirlos"],"metadata":{"id":"jGzsxMPQbOec"}},{"cell_type":"code","source":["A1=np.array(L1) #La función array convierte una lista a un arreglo\n","print(A1)"],"metadata":{"colab":{"base_uri":"https://localhost:8080/"},"id":"O7TG3mcQbNfS","executionInfo":{"status":"ok","timestamp":1686800714474,"user_tz":360,"elapsed":175,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}},"outputId":"f6270e34-9723-430d-92ea-d1be46e26e3c"},"execution_count":23,"outputs":[{"output_type":"stream","name":"stdout","text":["[1 2 3]\n"]}]},{"cell_type":"code","source":["A2=np.array(L2)\n","print(A2) #Haz lo mismo con L2, llamale al arreglo A2"],"metadata":{"id":"dp9MrgBRbLdU","colab":{"base_uri":"https://localhost:8080/"},"executionInfo":{"status":"ok","timestamp":1686800715917,"user_tz":360,"elapsed":209,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}},"outputId":"f345d72f-7642-4711-f9aa-739c074dbd47"},"execution_count":24,"outputs":[{"output_type":"stream","name":"stdout","text":["[4 4 9]\n"]}]},{"cell_type":"code","source":["A1/A2 #Divide A1/A2"],"metadata":{"id":"PDg1SfUVbjFc","colab":{"base_uri":"https://localhost:8080/"},"executionInfo":{"status":"ok","timestamp":1686800717403,"user_tz":360,"elapsed":170,"user":{"displayName":"Roberto García Gómez","userId":"07651563382691562012"}},"outputId":"6f31572b-91c4-4315-e7a4-f1e444223431"},"execution_count":25,"outputs":[{"output_type":"execute_result","data":{"text/plain":["array([0.25      , 0.5       , 0.33333333])"]},"metadata":{},"execution_count":25}]},{"cell_type":"markdown","source":["En la clase del jueves veremos más operaciones que se pueden realizar con arreglos y otras de sus caracteristicas"],"metadata":{"id":"64viBumUbzZh"}}]}