def find_using_index(index,name_key):
"""
使用index索引列表，查找姓名等于name_key在scores列表中的下标
:param index: 索引列表
:param name_key: 要查找的姓名
:return: 姓名为name_key的学生。None表示找不到。
"""
i_index = hash(name_key) % MAX_INDEX_SIZE
items=index[i_index]
for item in items:
if item.key == name_key:
return item.student
return None
#5-2-2.成绩.csv
filename = dlg.get_open_file_name("请选择成绩csv文件",dlg.FileFilter.CSVFiles)
if filename == "":
print("未选择文件")
exit(-1)
students = read_csv(filename)
dlg.show_objects(students)
index = create_index(students)
name = dlg.get_string("请输入要查找的姓名")
found = find_using_index(index,name)
if found is None:
dlg.show_message(f"找不到姓名为{name}的学生")
else:
dlg.show_message(f"id: {found.id} 姓名: {found.name} 成绩：{found.score}")
import easygraphics.dialog as dlg
def cals_sales_price(price):
sales = 0.9 * price
return sales
price = int(dlg.get_string("请输入原始价格:"))
sales_price = cals_sales_price(price)
dlg.show_message(f"打折后价格为{sales_price}")
import easygraphics.dialog as dlg
def calc_discount(total):
"""
计算折扣数和折后金额
:param total: 购物金额
:return: 折扣数,折后金额
"""
if total < 0:
raise ValueError('total should not < 0!')
if total >= 500:
discountRate = 0.9
elif total >= 200:
discountRate = 0.95
amount = total * discountRate
return discountRate, amount
total = float(dlg.get_string("请输入总金额"))
dis_rate, amount = calc_discount(total)
dlg.show_message(f"折扣率为{dis_rate},折后金额为{amount}")
return scores
def find_by_id(scores, id_key):
"""
在scores列表中查找id等于id_key的元素
:param scores: scores列表
:param id_key: 要查找的id关键字
:return: 找到的元素；None表示未找到
"""
for s in scores:
if s.id == id_key:
return s
return None
filename = dlg.get_open_file_name("请选择成绩csv文件", dlg.FileFilter.CSVFiles)
if filename == "":
print("未选择文件")
exit(-1)
scores = read_csv(filename)
dlg.show_objects(scores)
id = int(dlg.get_string("请输入要查找的id"))
found = find_by_id(scores, id)
if found is None:
dlg.show_message(f"找不到id为{id}的学生")
else:
dlg.show_message(f"id: {found.id} 姓名: {found.name} 成绩：{found.score}")
clazz = row[2]
math = int(row[3])
literacy = int(row[4])
english = int(row[5])
score = Score(id, name, clazz, math, literacy, english)
scores.append(score)
return scores
def score_to_total(score):
return score.math + score.english + score.literacy
def filter_by_class_base(score, clazz):
return score.clazz == clazz
filename = dlg.get_open_file_name("请选择数据文件", dlg.FileFilter.CSVFiles)
if filename == "":
print("未选择文件")
exit(-1)
scores = read_csv(filename)
my_clazz = dlg.get_string("请输入班级名称")
filter_by_class = partial(filter_by_class_base, clazz=my_clazz)
lst1 = filter(filter_by_class, scores)
lst2 = list(map(score_to_total, lst1))
total = sum(lst2)
count = len(lst2)
average = total / count
print(f"{my_clazz}班{count}名同学三科平均分为{average:.2f}")
from easygraphics.dialog import get_string
import random
MAX_SCORES = [30, 20, 30, 15, 5]
def check_max_scores(MAX_SCORES):
m = sum(MAX_SCORES)
if m != 100:
raise ValueError("总分必须为100")
try:
score = int(get_string("请输入总分:"))
except:
raise ValueError("总分必须为整数！")
n = len(MAX_SCORES)
scores = [0] * n
for i in range(n):
scores[i] = score * MAX_SCORES[i] // 100
remain = score - sum(scores)
rnd_lst = list(range(n))
while remain > 0:
i = random.choice(rnd_lst)
if MAX_SCORES[i] - scores[i] >= 2:
scores[i] += 1
remain -= 1
"""
从csv中读取学生信息，并以学号为关键字存入字典中
:param filename: csv文件名
:return: 以学号为关键字的学生信息字典
"""
scores = {}
with open(filename, mode="r", encoding="UTF-8") as file:
reader = csv.reader(file)
next(reader)
for row in reader:
id = row[0]
name = row[1]
score = Decimal(row[2])
s = Score(id, name, score)
scores[id] = s
return scores
filename = dlg.get_open_file_name("请选择学生成绩文件", dlg.FileFilter.CSVFiles)
if filename == "":
print("未指定文件")
exit(-1)
scores = read_csv(filename)
dlg.show_objects(list(scores.values()))
id = dlg.get_string("请输入要找的学号")
if id in scores:
s = scores[id]
dlg.show_message(f"id: {s.id} 姓名: {s.name} 成绩：{s.score}")
else:
dlg.show_message(f"找不到id为{id}的学生")
from pathlib import Path
from easygraphics import dialog as dlg
def find_in_dir(path, key):
results = []
for entry in path.iterdir(): # 遍历目录中的所有条目
if entry.is_dir(): # 如果是子目录
results0 = find_in_dir(entry, key) # 递归在子目录中查找
results.extend(results0) # 将查找结果并入结果集
if entry.is_file(): #如果是文件
if entry.name.find(key) != -1:
results.append(str(entry.resolve())) # 找到一个，加入结果集
return results
dir_path = dlg.get_directory_name("请选择文件夹")
s = dlg.get_string("请输入要查找的关键字:")
dir = Path(dir_path)
results = find_in_dir(dir, s)
for file in results:
print(file)
final_clip.to_videofile(os.path.join(root_dir, fr'{title}.mp4'),
fps=24,
remove_temp=False) # 生成目标视频文件
print(f'>>>>>视频合并完成!')
else:
print('>>>>>视频下载完成!') # 视频只有一段则直接打印下载完成
print()
if __name__ == '__main__':
os.system('cls')
print('-' * 30 + 'B站视频下载小助手' + '-' * 30)
print(welcome)
print('>>>>>获取视频地址...')
desktoppath = os.path.join(os.path.expanduser("~"), 'Desktop')
start = dlg.get_string(message='请输入您要下载的B站av号或视频链接地址',
title='BilibiliDownload')
start = start if start.isdigit() else re.search(r'/av(\d+)/*',
start).group(1)
start_url = 'https://api.bilibili.com/x/web-interface/view?aid=' + start
headers = {
'User-Agent':
'Mozilla/5.0 (Windows NT 10.0; Win64; x64) '
'AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36'
}
html = requests.get(start_url, headers=headers).json()
data = html['data']
video_title = data["title"].replace(" ", "_")
cid_list = []
if '?p=' in start:
p = re.search(r'\?p=(\d+)', start).group(1)
import easygraphics.dialog as gui
s = gui.get_string("your name:")
gui.show_message(f"hello {s}")
import easygraphics.dialog as dlg
def calc_sales_price(price):
if price < 0:
raise ValueError("price should not < 0!")
sales = 0.9 * price
return sales
try:
price = float(dlg.get_string("请输入价格："))
sales_price = calc_sales_price(price)
dlg.show_message(f"打折后价格为{sales_price}")
except ValueError as e:
print("出现错误", e)
finally:
print("我总会被执行")
import easygraphics.dialog as gui
import math
def sqrt(a, epsilon):
k = 0
xk = a
while True:
k += 1
xk1 = xk
xk = (xk1 + a / xk1) / 2
if math.fabs(xk - xk1) < epsilon:
break
root = xk
return xk
ep = 0.0001
a = float(gui.get_string("请输入a:"))
root = sqrt(a, ep)
gui.show_message(f"{a}的平方根是{root}")
if index.name == key_name:
return index.index
elif index.name < key_name:
start = mid+1
else:
end = mid - 1
return -1
# 从csv文件中读入学生成绩信息，放到scores列表中
# 5-2-1.成绩.csv
filename = dlg.get_open_file_name("请选择成绩csv文件",dlg.FileFilter.CSVFiles)
if filename == "":
print("未选择文件")
exit(-1)
scores = read_csv(filename)
dlg.show_objects(scores,fields=['id','name','clazz','math','literature','english'])
# 创建姓名的折半查找索引
name_indices = create_indices(scores)
dlg.show_objects(name_indices)
# 使用折半查找索引进行查找
key = dlg.get_string("请输入要查找的姓名")
i = find_using_index(name_indices,key)
if i == -1:
dlg.show_message(f"找不到姓名为{key}的学生")
else:
dlg.show_message(f"找到了！是{scores[i]}")
