cash_loan = mydata[mydata['NAME_CONTRACT_TYPE'] == 'Cash loans']

您的第一个问题是关于 Python 语言的代码，其中使用了 pandas 库对数据进行筛选。根据您提供的代码，这行代码的作用是选取一个名为 mydata 的数据集中，名为 NAME_CONTRACT_TYPE 的列等于 'Cash loans' 的所有行，并将结果赋值给变量 cash_loan。换句话说，这行代码筛选出了 mydata 数据集中所有贷款类型为“现金贷款”的行。

相关问题

修正下列代码并完善它 #include<stdio.h> int main(void) { int python,math,english,physical_education,military_theory,philosophy python = 3; math = 4; english = 4; physical_education= 2; military_theory = 2; philosophy = 2; scanf("%d,%d,%d,%d,%d,%d",&python,&math,&english,&physical_education,&military_theory,&philosophy); tuition_per_credit = int(input()); total_credits = (python + math + english + physical_education + military_theory + philosophy); total_tuition = total_credits * tuition_per_credit; living_expenses = float(input()); total_cost = living_expenses * 5 + total_tuition; student_loan = total_cost * 0.6; printf("student_loan "); return 0; }

以下是修正后的代码：

#include<stdio.h> 

int main(void) { 
    int python, math, english, physical_education, military_theory, philosophy; 
    float tuition_per_credit, living_expenses, total_cost, student_loan; 

    printf("请输入 Python 成绩、数学成绩、英语成绩、体育成绩、军事理论成绩和哲学成绩（以逗号分隔）："); 
    scanf("%d,%d,%d,%d,%d,%d", &python, &math, &english, &physical_education, &military_theory, &philosophy); 

    printf("请输入每学分的学费："); 
    scanf("%f", &tuition_per_credit); 

    int total_credits = python + math + english + physical_education + military_theory + philosophy; 
    float total_tuition = total_credits * tuition_per_credit; 

    printf("请输入每月生活费用："); 
    scanf("%f", &living_expenses); 

    total_cost = living_expenses * 5 + total_tuition; 
    student_loan = total_cost * 0.6; 

    printf("你需要申请 %.2f 元的学生贷款\n", student_loan); 

    return 0; 
} 

主要修正包括：

1. 添加了变量的声明，包括 `tuition_per_credit`、`living_expenses`、`total_cost` 和 `student_loan`；
2. 修改了 `scanf` 函数中的格式化字符串，使其与输入的变量类型匹配；
3. 添加了用户输入的提示信息；
4. 修改了输出语句，使其输出正确的结果。

select customer_name, borrower.loan_number, amount from borrower, loan where borrower.loan_number = loan.loan_number and branch_name = 'Perryridge’. What is the meaning of the borrower.loan_number = loan.loan_number。请用中文解释

"borrower.loan_number = loan.loan_number" 是一个连接条件。它指定了如何将 "borrower" 表和 "loan" 表连接起来以从两个表中检索数据。

具体来说，它表示应该将 "borrower" 表中的 "loan_number" 列与 "loan" 表中的 "loan_number" 列进行比较，只有这些值匹配的行才会包含在结果集中。换句话说，这个条件确保只返回从 "Perryridge" 分行借贷的客户的姓名、贷款编号和贷款金额。