diff --git a/.gitignore b/.gitignore
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+++ b/.gitignore
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+.env
+env/
diff --git a/ReadMe.md b/ReadMe.md
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+++ b/ReadMe.md
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+# UC Sports Attendance Marker
+
+<a href="https://github.com/psf/black"><img alt="Code style: black" src="https://img.shields.io/badge/code%20style-black-000000.svg"></a>
+
+Ante la inminente lata de rellenar tremendo form para marcar asitencia de mi deportivo todas las clases <https://docs.google.com/forms/d/e/1FAIpQLScaPxGIKPDwFNlVJcKmRRy7JHDUKQExt1fbrsIMvhwxJWt3kA/viewform>, cree un bot que lo hace por mí, prerellenando datos del usuario y solo pregutando por semana y día para marcar.
+
+## Setear el ambiente
+
+```bash
+python3 -m venv env
+```
+
+### Activar ambiente en Windows
+
+```bash
+env\Scripts\activate
+```
+
+### Activar ambiente en Linux o MAC
+
+```bash
+source env/bin/activate
+```
+
+## Instalar dependencias
+
+```bash
+pip install -r requirements.txt
+```
+
+## Ejecutar
+
+
+```bash
+python3 main.py
+```
diff --git a/chromedriver.exe b/chromedriver.exe
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Binary files /dev/null and b/chromedriver.exe differ
diff --git a/example.env b/example.env
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+++ b/example.env
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+# Correo UC
+EMAIL=
+
+# Primer nombre y 2 apellidos (utilice MAYÚSCULA)
+FULL_NAME=
+
+# RUT
+RUT=
+
+# NRC (solo números)
+NRC=
diff --git a/main.py b/main.py
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--- /dev/null
+++ b/main.py
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+import os
+import platform
+import time
+from dotenv import load_dotenv
+from selenium import webdriver
+from selenium.webdriver.common.by import By
+from selenium.webdriver.chrome.options import Options
+
+
+class FormBot(webdriver.Chrome):
+    def __init__(self, FORM_URL):
+        chrome_options = Options()
+        chrome_options.add_argument("log-level=3")
+
+        if platform.system() == "Darwin":
+            driver_location = os.path.join(os.getcwd(), "chromedriver")
+            super().__init__(executable_path=driver_location, options=chrome_options)
+        else:
+            super().__init__(options=chrome_options)
+
+        self.get(FORM_URL)
+
+    def fill_email(self, email):
+        email_input = self.find_element(
+            By.XPATH,
+            '//*[@id="mG61Hd"]/div[2]/div/div[2]/div[1]/div/div[1]/div[2]/div[1]/div/div[1]/input',
+        )
+        email_input.send_keys(email)
+
+    def fill_week(self, week):
+        n = (week - 1) * 3 + 9
+        self.find_element(By.XPATH, f'//*[@id="i{n}"]/div[3]/div').click()
+
+    def fill_name(self, full_name):
+        name_input = self.find_element(
+            By.XPATH,
+            '//*[@id="mG61Hd"]/div[2]/div/div[2]/div[3]/div/div/div[2]/div/div[1]/div/div[1]/input',
+        )
+        name_input.send_keys(full_name)
+
+    def fill_rut(self, rut):
+        rut_input = self.find_element(
+            By.XPATH,
+            '//*[@id="mG61Hd"]/div[2]/div/div[2]/div[4]/div/div/div[2]/div/div[1]/div/div[1]/input',
+        )
+        rut_input.send_keys(rut)
+
+    def fill_nrc(self, nrc):
+        nrc_input = self.find_element(
+            By.XPATH,
+            '//*[@id="mG61Hd"]/div[2]/div/div[2]/div[5]/div/div/div[2]/div/div[1]/div/div[1]/input',
+        )
+        nrc_input.send_keys(nrc)
+
+    def fill_day(self, day):
+        n = (day - 1) * 3 + 73
+        self.find_element(By.XPATH, f'//*[@id="i{n}"]/div[3]/div').click()
+
+    def submit(self):
+        self.find_element(
+            By.XPATH, '//*[@id="mG61Hd"]/div[2]/div/div[3]/div[1]/div[1]/div/span'
+        ).click()
+
+
+def check_valid_number(field, max_num):
+    num = 0
+    while num not in range(1, max_num + 1):
+        try:
+            num = int(input(f"Ingresa {field} que quieres llenar (1-{max_num}): "))
+        except ValueError:
+            print("ERROR: Ingresa un número")
+            continue
+        if num not in range(1, max_num + 1):
+            print(f"ERROR: Ingresa un número entre 1 y {max_num}")
+    return num
+
+
+if ".env" not in os.listdir(os.getcwd()):
+    print(
+        """No hay un archivo .env con tus credenciales.
+Crearemos uno para ti, rellena tus datos"""
+    )
+    time.sleep(2)
+
+    email = input("Email: ")
+    full_name = input("Primer nombre y 2 apellidos (utilice MAYÚSCULA): ")
+    rut = input("RUT: ")
+    nrc = input("NRC (solo números): ")
+
+    with open(".env", "w") as f:
+        f.write(f"EMAIL={email}\n")
+        f.write(f"FULL_NAME={full_name}\n")
+        f.write(f"RUT={rut}\n")
+        f.write(f"NRC={nrc}\n")
+
+load_dotenv()
+
+# Credencials
+FORM_URL = "https://docs.google.com/forms/d/e/1FAIpQLScaPxGIKPDwFNlVJcKmRRy7JHDUKQExt1fbrsIMvhwxJWt3kA/viewform"
+EMAIL = os.environ.get("EMAIL")
+FULL_NAME = os.environ.get("FULL_NAME")
+RUT = os.environ.get("RUT")
+NRC = os.environ.get("NRC")
+
+print(
+    f"""Las credenciales de tu ".env" son:
+    Email: {EMAIL}
+    Nombre: {FULL_NAME}
+    RUT: {RUT}
+    NRC (sólo números): {NRC}
+De haber algún error en ellas, abre el archivo ".env",
+corrigelas y vuelve a correr el programa.
+"""
+)
+
+WEEK = check_valid_number("semana", 16)
+DAY = check_valid_number("día", 3)
+
+try:
+    bot = FormBot(FORM_URL)
+    bot.fill_email(EMAIL)
+    bot.fill_week(WEEK)
+    bot.fill_name(FULL_NAME)
+    bot.fill_rut(RUT)
+    bot.fill_nrc(NRC)
+    bot.fill_day(DAY)
+    # bot.submit()
+    print("Asitencia marcada con éxito!")
+
+except Exception as e:
+    print(e)
+
+finally:
+    time.sleep(5)
+    bot.close()
diff --git a/requirements.txt b/requirements.txt
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+selenium===4.4.0
+python-dotenv===0.20.0
+pip===22.2.2