Informatica si programare

Aplicație în Python care gestionează datele despre elevi, note, materii și medii, și afișează un grafic cu aceste informații. Vom folosi biblioteci precum matplotlib pentru grafice și pandas pentru manipularea datelor. folder scoala cu situatie_scolara.py:

import pandas as pd

import matplotlib.pyplot as plt

import random

# Generăm 20 de elevi cu note random

elevi = []

materii = ["Matematica", "Romana", "Informatica"]

for i in range(20):

nume = f"Elev {i+1}"

note = {materie: random.randint(5, 10) for materie in materii}

elevi.append({"nume": nume, "materii": note})

# Crearea unui DataFrame cu datele

elevi_data = []

for elev in elevi:

nume = elev["nume"]

materii = elev["materii"]

medii = sum(materii.values()) / len(materii) # calculul mediei

elevi_data.append({"Nume": nume, **materii, "Media": medii})

# Creăm un DataFrame Pandas

df = pd.DataFrame(elevi_data)

# Afișăm tabelul cu datele elevilor

print(df)

# Graficul mediilor pe elevi

plt.figure(figsize=(10, 6))

plt.bar(df["Nume"], df["Media"], color='skyblue')

plt.xlabel("Elevi")

plt.ylabel("Media")

plt.title("Mediile elevilor")

plt.xticks(rotation=45)

plt.tight_layout()

# Afișăm graficul

plt.show()

# Graficul notelor pe materii pentru fiecare elev

materii = df.columns[1:-1] # excluzând "Nume" și "Media"

for materie in materii:

plt.figure(figsize=(10, 6))

plt.bar(df["Nume"], df[materie], color='orange')

plt.xlabel("Elevi")

plt.ylabel(f"Nota la {materie}")

plt.title(f"Notele elevilor la {materie}")

plt.xticks(rotation=45)

plt.tight_layout()

plt.show()

PS C:\Users\Florin\Desktop\scoala> & C:/msys64/ucrt64/bin/python.exe "c:/Users/Florin/scoala/situatie scolara.py"

Traceback (most recent call last):

File "c:/Users/Florin/scoala/situatie scolara.py", line 1, in <module>

import pandas as pd

ModuleNotFoundError: No module named 'pandas'

PS C:\Users\Florin\Desktop\scoala> pip install pandas

Defaulting to user installation because normal site-packages is not writeable

Requirement already satisfied: pandas in c:\users\florin\appdata\roaming\python\python311\site-packages (2.2.2)

Requirement already satisfied: numpy>=1.23.2 in c:\users\florin\appdata\roaming\python\python311\site-packages (from pandas) (2.0.0)

Requirement already satisfied: python-dateutil>=2.8.2 in c:\users\florin\appdata\roaming\python\python311\site-packages (from pandas) (2.9.0.post0)

Requirement already satisfied: pytz>=2020.1 in c:\users\florin\appdata\roaming\python\python311\site-packages (from pandas) (2024.1)

Requirement already satisfied: tzdata>=2022.7 in c:\users\florin\appdata\roaming\python\python311\site-packages (from pandas) (2024.1)

Requirement already satisfied: six>=1.5 in c:\users\florin\appdata\roaming\python\python311\site-packages (from python-dateutil>=2.8.2->pandas) (1.16.0)

[notice] A new release of pip is available: 24.2 -> 24.3.1

[notice] To update, run: python.exe -m pip install --upgrade pip

PS C:\Users\Florin\Desktop\scoala> pip3 install pandas

Defaulting to user installation because normal site-packages is not writeable

Requirement already satisfied: pandas in c:\users\florin\appdata\roaming\python\python311\site-packages (2.2.2)

Requirement already satisfied: numpy>=1.23.2 in c:\users\florin\appdata\roaming\python\python311\site-packages (from pandas) (2.0.0)

Requirement already satisfied: python-dateutil>=2.8.2 in c:\users\florin\appdata\roaming\python\python311\site-packages (from pandas) (2.9.0.post0)

Requirement already satisfied: pytz>=2020.1 in c:\users\florin\appdata\roaming\python\python311\site-packages (from pandas) (2024.1)

Requirement already satisfied: tzdata>=2022.7 in c:\users\florin\appdata\roaming\python\python311\site-packages (from pandas) (2024.1)

Requirement already satisfied: six>=1.5 in c:\users\florin\appdata\roaming\python\python311\site-packages (from python-dateutil>=2.8.2->pandas) (1.16.0)

[notice] A new release of pip is available: 24.2 -> 24.3.1

[notice] To update, run: python.exe -m pip install --upgrade pip

PS C:\Users\Florin\Desktop\scoala> python -m pip show pandas

Name: pandas

Version: 2.2.2

Summary: Powerful data structures for data analysis, time series, and statistics

Home-page: https://pandas.pydata.org

Author:

Author-email: The Pandas Development Team <pandas-dev@python.org>

License: BSD 3-Clause License

Redistribution and use in source and binary forms, with or without

modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this

list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice,

this list of conditions and the following disclaimer in the documentation

and/or other materials provided with the distribution.

* Neither the name of the copyright holder nor the names of its

contributors may be used to endorse or promote products derived from

this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE

FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER

CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Location: C:\Users\Florin\AppData\Roaming\Python\Python311\site-packages

Requires: numpy, python-dateutil, pytz, tzdata

Required-by: geopandas, seaborn