Weather Forecast Project In Python With Source Code

Weather Forecast Project In Python With Source Code

The Weather Forecast Project In Python was developed using Python Programming, this Simple Project With Source Code created using console based, and this project is good for the beginners or the students who wants to learn programming specially python programming language.

A Weather Prediction Project In Python is a simple console based application using machine learning which helps to determine if the current situation of weather is good to play or not. It is done under the supervised learning in which data are given first to train the system and then the result for new data will be produce.

This Weather Prediction Python Code also includes a downloadable, Project With Source Code for free, just find the downloadable source code below and click to start downloading.

By the way if you are new to python programming and you don’t know what would be the the Python IDE to use, I have here a list of Best Python IDE for Windows, Linux, Mac OS that will suit for you. I also have here How to Download and Install Latest Version of Python on Windows.

To start executing Weather Forecast Project In Python With Source Code, make sure that you have installed Python 3.9 and PyCharm in your computer.

Weather Forecast Project In Python With Source Code : Steps on how to run the project

Installed Libraries

from functools import reduce
import pandas as pd
import pprint

Complete Source Code

from functools import reduce
import pandas as pd
import pprint

class Classifier():
    data = None
    class_attr = None
    priori = {}
    cp = {}
    hypothesis = None


    def __init__(self,filename=None, class_attr=None ):
        self.data = pd.read_csv(filename, sep=',', header =(0))
        self.class_attr = class_attr

    '''
        probability(class) =    How many  times it appears in cloumn
                             __________________________________________
                                  count of all class attribute
    '''
    def calculate_priori(self):
        class_values = list(set(self.data[self.class_attr]))
        class_data =  list(self.data[self.class_attr])
        for i in class_values:
            self.priori[i]  = class_data.count(i)/float(len(class_data))
        print ("Priori Values: ", self.priori)

    '''
        Here we calculate the individual probabilites 
        P(outcome|evidence) =   P(Likelihood of Evidence) x Prior prob of outcome
                               ___________________________________________
                                                    P(Evidence)
    '''
    def get_cp(self, attr, attr_type, class_value):
        data_attr = list(self.data[attr])
        class_data = list(self.data[self.class_attr])
        total =1
        for i in range(0, len(data_attr)):
            if class_data[i] == class_value and data_attr[i] == attr_type:
                total+=1
        return total/float(class_data.count(class_value))

    '''
        Here we calculate Likelihood of Evidence and multiple all individual probabilities with priori
        (Outcome|Multiple Evidence) = P(Evidence1|Outcome) x P(Evidence2|outcome) x ... x P(EvidenceN|outcome) x P(Outcome)
        scaled by P(Multiple Evidence)
    '''
    def calculate_conditional_probabilities(self, hypothesis):
        for i in self.priori:
            self.cp[i] = {}
            for j in hypothesis:
                self.cp[i].update({ hypothesis[j]: self.get_cp(j, hypothesis[j], i)})
        print ("\nCalculated Conditional Probabilities: \n")
        pprint.pprint(self.cp)

    def classify(self):
        print ("Result: ")
        for i in self.cp:
            print (i, " ==> ", reduce(lambda x, y: x*y, self.cp[i].values())*self.priori[i])

'''    Exit from the system it the input is "x" or "exit"   '''
def exitSystem():
        print("System Terminated!")
        print("Thank you for using this system!")
        exit()

if __name__ == "__main__":
    c = Classifier(filename="dataset.csv", class_attr="Play")
    print("Enter the correct values shown in the option! *Case Sensitive")
    print("Enter 'x' or 'exit' to exit from the system")
    outlook = input("Whats the weather outside? (Sunny, Rainy, Overcast):")
    if outlook.lower() == 'x' or outlook.lower() == 'exit':
        exitSystem()
    temp = input("Whats the temperature today? (Hot, Mild, Cool):")
    if temp.lower() == 'x' or temp.lower()== 'exit':
        exitSystem()
    humidity = input("Whats the humidity? (High, Normal):")
    if humidity.lower() == 'x' or humidity.lower()== 'exit':
        exitSystem()
    windy = input("Is it windy tody? (t or f):")
    if windy.lower() == 'x' or windy.lower()== 'exit':
        exitSystem()

    c.hypothesis = {"Outlook":outlook, "Temp":temp, "Humidity":humidity , "Windy":windy}
    c.calculate_priori()
    c.calculate_conditional_probabilities(c.hypothesis)
    c.classify()

Output

Download Source Code below

Summary

A simple machine learning project done in Python. This is a simple console based application using machine learning which helps to determine if the current situation of weather is good to play or not.

It is done under the supervised learning in which data are given first to train the system and then the result for new data will be produce.

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Inquiries

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Angel Jude Suarez

Full-Stack Developer at PIES IT Solution

Focuses on Python development, machine learning, and AI integration. Has built production AI systems including OpenAI Whisper integration for medical transcription and GPT-4o-powered diagnosis assistance. Strong background in pandas, scikit-learn, and TensorFlow.

Expertise: Python · PHP · Java · VB.NET · ASP.NET · Machine Learning · AI Integration · OpenCV · Django · CodeIgniter  · View all posts by Angel Jude Suarez →