Write a function which check if provided variable is a valid python variable
时间: 2024-05-11 15:16:33 浏览: 14
名。(编写一个函数来检查提供的变量名是否是有效的 Python 变量名。))
可以按照以下方式创建一个这样的函数:
```python
import keyword
def is_valid_variable_name(variable_name):
"""
Check if provided variable name is a valid Python variable name.
"""
if not variable_name.isidentifier() or keyword.iskeyword(variable_name):
return False
return True
```
该函数使用 Python 内置的 `isidentifier()` 函数来检查变量名是否是有效的标识符。它还使用 `keyword.iskeyword()` 函数来检查变量名是否是 Python 关键字。如果变量名是有效的 Python 变量名,则该函数将返回 `True`,否则返回 `False`。
相关问题
使用c语言Write a program to check if the given 2D array is a symmetric matrix.
以下是用C语言编写的检查给定2D数组是否为对称矩阵的程序:
```c
#include <stdio.h>
int main() {
int rows, cols, i, j, isSymmetric = 1;
printf("Enter number of rows and columns of matrix: ");
scanf("%d %d", &rows, &cols);
int matrix[rows][cols];
printf("Enter matrix elements:\n");
// Read matrix elements
for (i = 0; i < rows; i++) {
for (j = 0; j < cols; j++) {
scanf("%d", &matrix[i][j]);
}
}
// Check if matrix is symmetric
for (i = 0; i < rows; i++) {
for (j = 0; j < cols; j++) {
if (matrix[i][j] != matrix[j][i]) {
isSymmetric = 0;
break;
}
}
if (isSymmetric == 0) {
break;
}
}
if (isSymmetric) {
printf("The matrix is symmetric.\n");
} else {
printf("The matrix is not symmetric.\n");
}
return 0;
}
```
该程序首先要求用户输入矩阵的行数和列数,然后读取矩阵元素并检查矩阵是否对称。如果矩阵是对称的,则程序输出“该矩阵是对称的”,否则输出“该矩阵不是对称的”。程序使用两个嵌套的循环来遍历矩阵,并检查矩阵的每个元素是否等于其转置的元素。如果任何元素不等于其转置,则矩阵不对称,程序将退出循环。
write a lumbda function to formate a name by python
Here's an example of a Lambda function written in Python that formats a name:
```
import json
def lambda_handler(event, context):
first_name = event['first_name'].capitalize()
last_name = event['last_name'].capitalize()
full_name = f"{first_name} {last_name}"
return {
'statusCode': 200,
'body': json.dumps(full_name)
}
```
This function takes in two parameters, `first_name` and `last_name`, which are passed in as part of an event object. It then capitalizes the first letter of each name and combines them into a full name. Finally, the function returns the formatted name as a JSON object with a status code of 200.