04-exam2 NYU Python

# solution_1.py

def main():
    # 请求用户输入第一个整数
    x_input = input("Please enter an integer >= 10: ")
    # 检查输入是否为数字，并且是非负数
    if not x_input.isdigit():
        print("Invalid number!")
        return

    # 将输入转换为整数
    x = int(x_input)

    # 检查第一个整数是否小于10
    if x < 10:
        print("Too small!")
        return

    # 请求用户输入第二个整数
    y_input = input("Please enter an integer >= 10: ")
    # 检查输入是否为数字，并且是非负数
    if not y_input.isdigit():
        print("Invalid number!")
        return

    # 将输入转换为整数
    y = int(y_input)

    # 检查第二个整数是否小于10
    if y < 10:
        print("Too small!")
        return

    # 如果两个数都有效，打印它们的和
    print(f"{x} + {y} = {x + y}")

if __name__ == "__main__":
    main()

import datetime
import re

def calculate_age(birthdate):
    today = datetime.date.today()
    age = today.year - birthdate.year - ((today.month, today.day) < (birthdate.month, birthdate.day))
    return age

def is_valid_date(date_str):
    if not re.match(r"^\d{4}/\d{2}/\d{2}$", date_str):
        return False
    year, month, day = map(int, date_str.split('/'))
    if not (1 <= month <= 12):
        return False
    if not (1 <= day <= 31):
        return False
    if month == 2:
        if (year % 4 == 0 and year % 100 != 0) or (year % 400 == 0):
            if day > 29:
                return False
        else:
            if day > 28:
                return False
    elif month in [4, 6, 9, 11] and day > 30:
        return False
    try:
        birthdate = datetime.date(year, month, day)
    except ValueError:
        return False
    age = calculate_age(birthdate)
    if age < 0 or age > 122:
        return False
    return True

def main():
    while True:
        user_input = input("Enter your birthdate (yyyy/mm/dd): ")
        if is_valid_date(user_input):
            year, month, day = map(int, user_input.split('/'))
            birthdate = datetime.date(year, month, day)
            age = calculate_age(birthdate)
            print(f"You are {age} years old!")
            break
        else:
            print("Invalid date!")

if __name__ == "__main__":
    main()

import datetime

def calculate_age(birthdate):
    today = datetime.date.today()
    age = today.year - birthdate.year - ((today.month, today.day) < (birthdate.month, birthdate.day))
    return age

def is_valid_date(date_str):
    # 检查字符串是否为10个字符长度，并且包含两个斜杠
    if len(date_str) != 10 or date_str[4] != '/' or date_str[7] != '/':
        return False
    
    parts = date_str.split('/')
    if len(parts) != 3:
        return False
    
    year, month, day = parts
    
    if not (year.isdigit() and month.isdigit() and day.isdigit()):
        return False
    
    year = int(year)
    month = int(month)
    day = int(day)
    
    if not (1 <= month <= 12):
        return False
    
    if not (1 <= day <= 31):
        return False
    
    if month == 2:
        if (year % 4 == 0 and year % 100 != 0) or (year % 400 == 0):
            if day > 29:
                return False
        else:
            if day > 28:
                return False
    elif month in [4, 6, 9, 11] and day > 30:
        return False
    
    try:
        birthdate = datetime.date(year, month, day)
    except ValueError:
        return False
    
    age = calculate_age(birthdate)
    if age < 0 or age > 122:
        return False
    
    return True

def main():
    while True:
        user_input = input("Enter your birthdate (yyyy/mm/dd): ")
        if is_valid_date(user_input):
            year, month, day = map(int, user_input.split('/'))
            birthdate = datetime.date(year, month, day)
            age = calculate_age(birthdate)
            print(f"You are {age} years old!")
            break
        else:
            print("Invalid date!")

if __name__ == "__main__":
    main()

def main():
    file_path = './data/nyc_jobs.csv'
    entry_level_jobs = {}

    with open(file_path, 'r', encoding='utf-8') as file:
        lines = file.readlines()
        for line in lines[1:]:  # Skip the header
            columns = line.strip().split(',')
            agency = columns[1].strip().upper()  # Agency name in uppercase
            career_level = columns[2].strip()  # Career level
            if career_level == 'Entry-Level':
                if agency not in entry_level_jobs:
                    entry_level_jobs[agency] = 0
                entry_level_jobs[agency] += 1

    # Print results
    max_agency_length = max(len(agency) for agency in entry_level_jobs)
    for agency, count in sorted(entry_level_jobs.items()):
        print(f"{agency.ljust(max_agency_length)} {count:>5}")

if __name__ == '__main__':
    main()

def main():
    file_path = './data/nyc_jobs.csv'
    entry_level_jobs = {}

    file = open(file_path, 'r', encoding='utf-8')
    lines = file.readlines()
    for line in lines[1:]:
        columns = line.strip().split(',')
        agency = columns[1].strip().upper()
        career_level = columns[2].strip()
        if career_level == 'Entry-Level':
            if agency not in entry_level_jobs:
                entry_level_jobs[agency] = 0
            entry_level_jobs[agency] += 1

    max_agency_length = max(len(agency) for agency in entry_level_jobs)
    for agency, count in sorted(entry_level_jobs.items()):
        print(f"{agency.ljust(max_agency_length)} {count:>5}")


if __name__ == '__main__':
    main()

def main():
    file_path = './data/nyc_jobs.csv'
    entry_level_jobs = {}

    file = open(file_path, 'r', encoding='utf-8')
    lines = file.readlines()
    for line in lines[1:]:
        columns = line.strip().split(',')
        agency = columns[1].strip().upper()
        career_level = columns[2].strip()
        if career_level == 'Entry-Level':
            if agency not in entry_level_jobs:
                entry_level_jobs[agency] = 0
            entry_level_jobs[agency] += 1

    # 计算每个 agency 的长度
    agency_lengths = [len(agency) for agency in entry_level_jobs]

    # 找到最大长度
    max_agency_length = max(agency_lengths)

    for agency, count in sorted(entry_level_jobs.items()):
        print(f"{agency.ljust(max_agency_length)} {count:>5}")


if __name__ == '__main__':
    main()

def main():
    file_path = './data/nyc_jobs.csv'
    entry_level_jobs = {}

    file = open(file_path, 'r', encoding='utf-8')
    lines = file.readlines()
    for line in lines[1:]:
        columns = line.strip().split(',')
        agency = columns[1].strip().upper()
        career_level = columns[2].strip()
        if career_level == 'Entry-Level':
            if agency not in entry_level_jobs:
                entry_level_jobs[agency] = 0
            entry_level_jobs[agency] += 1

    # 计算每个 agency 的长度并找到最大长度
    max_agency_length = 0
    for agency in entry_level_jobs:
        agency_length = len(agency)
        if agency_length > max_agency_length:
            max_agency_length = agency_length

    # 手动排序 entry_level_jobs 的 items
    sorted_items = []
    for agency in entry_level_jobs:
        sorted_items.append((agency, entry_level_jobs[agency]))

    # 手动排序
    for i in range(len(sorted_items)):
        for j in range(i + 1, len(sorted_items)):
            if sorted_items[i][0] > sorted_items[j][0]:
                sorted_items[i], sorted_items[j] = sorted_items[j], sorted_items[i]

    # 输出结果
    for agency, count in sorted_items:
        print(f"{agency.ljust(max_agency_length)} {count:>5}")


if __name__ == '__main__':
    main()

def main():
    file_path = './data/nyc_jobs.csv'
    entry_level_jobs = {}

    file = open(file_path, 'r', encoding='utf-8')
    lines = file.readlines()
    for line in lines[1:]:
        columns = line.strip().split(',')
        agency = columns[1].strip().upper()
        career_level = columns[2].strip()
        if career_level == 'Entry-Level':
            if agency not in entry_level_jobs:
                entry_level_jobs[agency] = 0
            entry_level_jobs[agency] += 1

    # 计算每个 agency 的长度并找到最大长度
    max_agency_length = 0
    for agency in entry_level_jobs:
        agency_length = len(agency)
        if agency_length > max_agency_length:
            max_agency_length = agency_length

    # 手动排序 entry_level_jobs 的 items
    sorted_items = []
    for agency in entry_level_jobs:
        sorted_items.append((agency, entry_level_jobs[agency]))

    # 手动排序
    for i in range(len(sorted_items)):
        for j in range(i + 1, len(sorted_items)):
            if sorted_items[i][0] > sorted_items[j][0]:
                sorted_items[i], sorted_items[j] = sorted_items[j], sorted_items[i]

    # 输出结果
    # for agency, count in sorted_items:
    #     print(f"{agency.ljust(max_agency_length)} {count:>5}")
    for agency, count in sorted_items:
        formatted_agency = agency + ' ' * (max_agency_length - len(agency))
        print(f"{formatted_agency} {count:>5}")

if __name__ == '__main__':
    main()

def main():
    file_path = './data/nyc_jobs.csv'
    entry_level_jobs = {}

    with open(file_path, 'r', encoding='utf-8') as file:
        lines = file.readlines()
        for line in lines[1:]:
            columns = line.strip().split(',')
            agency = columns[1].strip().upper()
            career_level = columns[2].strip()
            if career_level == 'Entry-Level':
                if agency not in entry_level_jobs:
                    entry_level_jobs[agency] = 0
                entry_level_jobs[agency] += 1

    # 计算每个 agency 的长度并找到最大长度
    max_agency_length = 0
    for agency in entry_level_jobs:
        agency_length = len(agency)
        if agency_length > max_agency_length:
            max_agency_length = agency_length

    # 手动排序 entry_level_jobs 的 items
    sorted_items = []
    for agency in entry_level_jobs:
        sorted_items.append((agency, entry_level_jobs[agency]))

    # 手动排序
    for i in range(len(sorted_items)):
        for j in range(i + 1, len(sorted_items)):
            if sorted_items[i][0] > sorted_items[j][0]:
                sorted_items[i], sorted_items[j] = sorted_items[j], sorted_items[i]

    # 输出结果
    for agency, count in sorted_items:
        formatted_agency = agency + ' ' * (max_agency_length - len(agency))
        print(f"{formatted_agency} {count:>5}")


if __name__ == '__main__':
    main()

import pandas as pd

def capitalize_name(name):
    return ' '.join([part.capitalize() for part in name.split()])

def read_people_data(file_path):
    data = pd.read_csv(file_path)
    people = data.to_dict('records')
    for person in people:
        person['email'] = person['email'].lower()
    return people

def main():
    file_path = 'data/people.csv'
    people = read_people_data(file_path)
    
    name_to_search = input("Enter a name: ").strip().lower()
    
    person_found = None
    for person in people:
        if person['name'].strip().lower() == name_to_search:
            person_found = person
            break
    
    if person_found:
        print(f"Name: {capitalize_name(person_found['name'])}")
        print(f"Country: {capitalize_name(person_found['country'])}")
        print(f"Email: {person_found['email']}")
    else:
        print("Name not found!")

if __name__ == "__main__":
    main()

import pandas as pd


def capitalize_name(name):
    string = ' '
    for part in name.split():
        part = part.capitalize()
        string = string + part
    return string


def read_people_data(file_path):
    data = pd.read_csv(file_path)
    people = data.to_dict('records')
    for person in people:
        person['email'] = person['email'].lower()
    return people


def main():
    file_path = 'data/people.csv'
    people = read_people_data(file_path)

    name_to_search = input("Enter a name: ").strip().lower()

    person_found = None
    for person in people:
        if person['name'].strip().lower() == name_to_search:
            person_found = person
            break

    if person_found:
        print(f"Name: {capitalize_name(person_found['name'])}")
        print(f"Country: {capitalize_name(person_found['country'])}")
        print(f"Email: {person_found['email']}")
    else:
        print("Name not found!")


if __name__ == "__main__":
    main()

def capitalize_name(name):
    string = ' '
    for part in name.split():
        part = part.capitalize()
        string = string + part
    return string


def read_people_data(file_path):
    people = []
    with open(file_path, 'r', encoding='utf-8') as file:
        headers = file.readline().strip().split(',')
        for line in file:
            values = line.strip().split(',')
            person = dict(zip(headers, values))
            person['email'] = person['email'].lower()
            people.append(person)
    return people


def main():
    file_path = 'data/people.csv'
    people = read_people_data(file_path)

    name_to_search = input("Enter a name: ").strip().lower()

    person_found = None
    for person in people:
        if person['name'].strip().lower() == name_to_search:
            person_found = person
            break

    if person_found:
        print(f"Name: {capitalize_name(person_found['name'])}")
        print(f"Country: {capitalize_name(person_found['country'])}")
        print(f"Email: {person_found['email']}")
    else:
        print("Name not found!")


if __name__ == "__main__":
    main()

def capitalize_name(name):
    string = ' '
    for part in name.split():
        part = part.capitalize()
        string = string + part
    return string


def read_people_data(file_path):
    people = []
    file = open(file_path, 'r', encoding='utf-8')
    headers = file.readline().strip().split(',')
    for line in file:
        values = line.strip().split(',')
        person = dict(zip(headers, values))
        person['email'] = person['email'].lower()
        people.append(person)
    file.close()
    return people


def main():
    file_path = 'data/people.csv'
    people = read_people_data(file_path)

    name_to_search = input("Enter a name: ").strip().lower()

    person_found = None
    for person in people:
        if person['name'].strip().lower() == name_to_search:
            person_found = person
            break

    if person_found:
        print(f"Name: {capitalize_name(person_found['name'])}")
        print(f"Country: {capitalize_name(person_found['country'])}")
        print(f"Email: {person_found['email']}")
    else:
        print("Name not found!")


if __name__ == "__main__":
    main()

def capitalize_name(name):
    string = ' '
    for part in name.split():
        part = part.capitalize()
        string = string + part
    return string


# def read_people_data(file_path):
#     people = []
#     file = open(file_path, 'r', encoding='utf-8')
#     headers = file.readline().strip().split(',')
#     for line in file:
#         values = line.strip().split(',')
#         person = dict(zip(headers, values))
#         person['email'] = person['email'].lower()
#         people.append(person)
#     file.close()
#     return people
def read_people_data(file_path):
    people = []
    file = open(file_path, 'r', encoding='utf-8')
    headers = file.readline().strip().split(',')
    for line in file:
        values = line.strip().split(',')
        person = {headers[i]: values[i] for i in range(len(headers))}  # 使用字典推导来创建字典
        person['email'] = person['email'].lower()
        people.append(person)

    return people


def main():
    file_path = 'data/people.csv'
    people = read_people_data(file_path)

    name_to_search = input("Enter a name: ").strip().lower()

    person_found = None
    for person in people:
        if person['name'].strip().lower() == name_to_search:
            person_found = person
            break

    if person_found:
        print(f"Name: {capitalize_name(person_found['name'])}")
        print(f"Country: {capitalize_name(person_found['country'])}")
        print(f"Email: {person_found['email']}")
    else:
        print("Name not found!")


if __name__ == "__main__":
    main()