Weather Analysis

weatheranalwhile.py

#!/usr/bin/env python3
"""
Analyses weather data from a file Santa Cruz Beach Boardwalk's weather station.
Data is collected once every 5 minutes.
This assignment required the exclusive use of While Loops

assumed:
 - Atleast 1 data point
 - Data is formated
"""

import sys


class DataPoint:
    def __init__(self, date, time, data):
        self.date = date
        self.time = time
        self.data = float(data)

    def __repr__(self):
        return f"Date: {self.date}, Time: {self.time}, Data: {self.data}"


dataPoints = []
mean = 0
maxValue = DataPoint("", "", sys.float_info.min)
minValue = DataPoint("", "", sys.float_info.max)
inData = iter(sys.stdin)
while True:
    try:
        line = next(inData)
        dataLines = line.split()

        value = float(dataLines[2])
        if value > maxValue.data:
            maxValue = DataPoint(dataLines[0], dataLines[1], value)
        elif value < minValue.data:
            minValue = DataPoint(dataLines[0], dataLines[1], value)

        dataPoints.append(value)
        mean += value
    except StopIteration:
        if maxValue.data == sys.float_info.min:
            maxValue = minValue
        elif minValue.data == sys.float_info.max:
            minValue = maxValue
        break

dataPoints.sort()
mean = mean / len(dataPoints)
mid = len(dataPoints) // 2
median = (dataPoints[mid] + dataPoints[~mid]) / 2
median = int(median) if median.is_integer() else median

mode = minValue.data
modeInstances = 1
currentNumber = -1000
currentCount = 0
iteration = iter(dataPoints)
while True:
    try:
        point = next(iteration)
        if point != currentNumber:
            # skips itterating through the end
            if currentNumber == maxValue.data:
                currentCount = len(dataPoints) - dataPoints.index(point)
                if currentCount > modeInstances:
                    mode = currentNumber
                    modeInstances = currentCount
                    break

            if currentCount > modeInstances:
                modeInstances = currentCount
                mode = currentNumber

            currentNumber = point
            currentCount = 0

        currentCount += 1
    except StopIteration:
        break

print(f"Count: {len(dataPoints)}")
print(f"Max: {int(maxValue.data)} @ {maxValue.date} {maxValue.time}")
print(f"Min: {int(minValue.data)} @ {minValue.date} {minValue.time}")
print(f"Mean: {(f'{(mean):.4f}').rstrip('0').rstrip('.')}")
print(f"Median: {median}")
print(f"Mode: {int(mode)} ({modeInstances} instances)")