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TA的专栏 153篇文章 31人订阅

进阶高级测试工程师

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全部文章（共156篇）

题解 | 使用正规方程的线性回归

import numpy as np def linear_regression_normal_equation( X: list[list[float]], y: list[float] ) -> list[float]: # 实现代码 X_transpose =...

2025-02-24

0 195

题解 | 牛客网最多的用户等级

import pandas as pd df = pd.read_csv('Nowcoder.csv') print(pd.DataFrame(df['Level'].mode(),columns=['Level']))

2025-02-24

0 93

题解 | 用户常用语言有多少

import pandas as pd df = pd.read_csv('Nowcoder.csv') num = df['Language'].nunique() print(num,df['Language'].unique(),sep='\n')

2025-02-24

0 56

题解 | 牛客网用户等级的中位数

import pandas as pd df = pd.read_csv('Nowcoder.csv') sub = df[df['Num_of_exercise']>10] print(int(sub['Level'].median()))

2025-02-24

0 58

题解 | Python用户的平均提交次数

import pandas as pd df = pd.read_csv('Nowcoder.csv') sub_df = df[df['Language'] == 'Python'] tmp_df = sub_df['Number_of_submissions'].mean() print...

2025-02-24

0 54

题解 | 牛客网用户最近的最长与最短连续签到天数

import pandas as pd df = pd.read_csv('Nowcoder.csv') long_day = df['Continuous_check_in_days'].max() short_day = df['Continuous_check_in_days'].min...

2025-02-24

0 61

题解 | 牛客网不同语言使用人数

import pandas as pd Nowcoder = pd.read_csv("Nowcoder.csv", sep=",") print(Nowcoder.Language.value_counts())

2025-02-24

0 55

题解 | 两份用户信息表格中的查找

import pandas as pd pd.set_option('display.width',300) pd.set_option('display.max_rows',None) pd.set_option('display.max_columns',None) item1 = pd.r...

2025-02-24

0 51

题解 | 合并用户信息表与用户活跃表

import pandas as pd pd.set_option('display.width',None) pd.set_option('display.max_columns',None) item1 = pd.read_csv('Nowcoder1.csv') item2 = pd....

2025-02-24

0 59

题解 | 运动会各项目报名透视表

import pandas as pd items = pd.read_csv('items.csv') singup = pd.read_csv('signup.csv') df = pd.merge(items,singup,on='item_id',how='left') print...

2025-02-24

0 58