Using this website: https://en.wikipedia.org/wiki/Greenhouse_gas Create a named tuple to contain each Gas Concentration data for these columns: Gas,Pre-1750,Recent,Absolute increase since 1750,Percentage increase since 1750. Design a class to hold this named tuple and add necessary dunders to support initialization, string conversion, sorting by a specific column (like 'Recent' for example) and searching. Your Answer: class GreenhouseGasData(NamedTuple): Gas: str Pre_1750: float Recent: float Absolute_increase_since_1750: float Percentage_increase_since_1750: float class GreenhouseGasCollection: def __init__(self, data): self.data = data def __repr__(self): return str(self.data) def sort_by(self, column): if column not in GreenhouseGasData._fields: raise ValueError(f"{column} not found in {GreenhouseGasData._fields}") # self.data = sorted(self.data, key=lambda x: x[column]) self.data = sorted(self.data, key=lambda x: getattr(x, column)) def search(self, gas): for gas_data in self.data: if gas_data.Gas == gas: return gas_data return None def main(): data = [ GreenhouseGasData("Carbon dioxide", 280, 414.8, 134.8, 48.0), GreenhouseGasData("Methane", 722, 1874.0, 1152.0, 159.0), GreenhouseGasData("Nitrous oxide", 270, 329.0, 59.0, 21.9), GreenhouseGasData("Fluorinated gases", 0.5, 13.0, 12.5, 2500.0), ] collection = GreenhouseGasCollection(data) print("Data:", collection) collection.sort_by("Recent") print("Data sorted by Recent:", collection) result = collection.search("Carbon dioxide") if result: print("Data for Carbon dioxide:", result) else: print("Data for Carbon dioxide not found") if __name__ == "__main__": main() mistake was Missing dunders

Using this website: https://en.wikipedia.org/wiki/Greenhouse_gas Create a named tuple to contain each Gas Concentration data for these columns: Gas,Pre-1750,Recent,Absolute increase since 1750,Percentage increase since 1750. Design a class to hold this named tuple and add necessary dunders to support initialization, string conversion, sorting by a specific column (like 'Recent' for example) and searching. Your Answer: class GreenhouseGasData(NamedTuple): Gas: str Pre_1750: float Recent: float Absolute_increase_since_1750: float Percentage_increase_since_1750: float class GreenhouseGasCollection: def init(self, data): self.data = data def repr(self): return str(self.data) def sort_by(self, column): if column not in GreenhouseGasData._fields: raise ValueError(f"{column} not found in {GreenhouseGasData._fields}") # self.data = sorted(self.data, key=lambda x: x[column]) self.data = sorted(self.data, key=lambda x: getattr(x, column)) def search(self, gas): for gas_data in self.data: if gas_data.Gas == gas: return gas_data return None def main(): data = [ GreenhouseGasData("Carbon dioxide", 280, 414.8, 134.8, 48.0), GreenhouseGasData("Methane", 722, 1874.0, 1152.0, 159.0), GreenhouseGasData("Nitrous oxide", 270, 329.0, 59.0, 21.9), GreenhouseGasData("Fluorinated gases", 0.5, 13.0, 12.5, 2500.0), ] collection = GreenhouseGasCollection(data) print("Data:", collection) collection.sort_by("Recent") print("Data sorted by Recent:", collection) result = collection.search("Carbon dioxide") if result: print("Data for Carbon dioxide:", result) else: print("Data for Carbon dioxide not found") if name == "main": main() mistake was Missing dunders

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

1. Using this website: https://en.wikipedia.org/wiki/Greenhouse_gas
Create a named tuple to contain each Gas Concentration data for these columns:

Gas,Pre-1750,Recent,Absolute increase since 1750,Percentage increase since 1750.

Design a class to hold this named tuple and add necessary dunders to support initialization, string conversion, sorting by a specific column (like 'Recent' for example) and searching.

Your Answer:

class GreenhouseGasData(NamedTuple):

Gas: str

Pre_1750: float

Recent: float

Absolute_increase_since_1750: float

Percentage_increase_since_1750: float

class GreenhouseGasCollection:

def __init__(self, data):

self.data = data

def __repr__(self):

return str(self.data)

def sort_by(self, column):

if column not in GreenhouseGasData._fields:

raise ValueError(f"{column} not found in {GreenhouseGasData._fields}")

# self.data = sorted(self.data, key=lambda x: x[column])

self.data = sorted(self.data, key=lambda x: getattr(x, column))

def search(self, gas):

for gas_data in self.data:

if gas_data.Gas == gas:

return gas_data

return None

def main():

data = [

GreenhouseGasData("Carbon dioxide", 280, 414.8, 134.8, 48.0),

GreenhouseGasData("Methane", 722, 1874.0, 1152.0, 159.0),

GreenhouseGasData("Nitrous oxide", 270, 329.0, 59.0, 21.9),

GreenhouseGasData("Fluorinated gases", 0.5, 13.0, 12.5, 2500.0),

]

collection = GreenhouseGasCollection(data)

print("Data:", collection)

collection.sort_by("Recent")

print("Data sorted by Recent:", collection)

result = collection.search("Carbon dioxide")

if result:

print("Data for Carbon dioxide:", result)

else:

print("Data for Carbon dioxide not found")

if __name__ == "__main__":

main()

mistake was Missing dunders

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