Question

Choose which of the following are valid Python variable names. Note that they do not have to be good variable names, just valid.

BankAccount, "dogs_list", first name, _27_, 5th_value, book-title, stor_txt

Answer 1

In Python, variable names must follow certain rules and conventions. They can include letters (both lowercase and uppercase), digits, and underscores, but they must start with a letter (a-z, A-Z) or an underscore (_). They cannot start with a digit (0-9), and they cannot include spaces or special characters other than underscores. Based on these rules, here are the valid variable names from the options you provided:

In Python, variable names must follow certain rules and conventions. They can include letters (both lowercase and uppercase), digits, and underscores, but they must start with a letter (a-z, A-Z) or an underscore (_). They cannot start with a digit (0-9), and they cannot include spaces or special characters other than underscores. Based on these rules, here are the valid variable names from the options you provided:1. BankAccount

In Python, variable names must follow certain rules and conventions. They can include letters (both lowercase and uppercase), digits, and underscores, but they must start with a letter (a-z, A-Z) or an underscore (_). They cannot start with a digit (0-9), and they cannot include spaces or special characters other than underscores. Based on these rules, here are the valid variable names from the options you provided:1. BankAccount2. _27_

In Python, variable names must follow certain rules and conventions. They can include letters (both lowercase and uppercase), digits, and underscores, but they must start with a letter (a-z, A-Z) or an underscore (_). They cannot start with a digit (0-9), and they cannot include spaces or special characters other than underscores. Based on these rules, here are the valid variable names from the options you provided:1. BankAccount2. _27_3. 5th_value

In Python, variable names must follow certain rules and conventions. They can include letters (both lowercase and uppercase), digits, and underscores, but they must start with a letter (a-z, A-Z) or an underscore (_). They cannot start with a digit (0-9), and they cannot include spaces or special characters other than underscores. Based on these rules, here are the valid variable names from the options you provided:1. BankAccount2. _27_3. 5th_value4. dogs_list

In Python, variable names must follow certain rules and conventions. They can include letters (both lowercase and uppercase), digits, and underscores, but they must start with a letter (a-z, A-Z) or an underscore (_). They cannot start with a digit (0-9), and they cannot include spaces or special characters other than underscores. Based on these rules, here are the valid variable names from the options you provided:1. BankAccount2. _27_3. 5th_value4. dogs_listThe following variable names are not valid according to Python's naming rules:

In Python, variable names must follow certain rules and conventions. They can include letters (both lowercase and uppercase), digits, and underscores, but they must start with a letter (a-z, A-Z) or an underscore (_). They cannot start with a digit (0-9), and they cannot include spaces or special characters other than underscores. Based on these rules, here are the valid variable names from the options you provided:1. BankAccount2. _27_3. 5th_value4. dogs_listThe following variable names are not valid according to Python's naming rules:1. first name (Contains a space)

In Python, variable names must follow certain rules and conventions. They can include letters (both lowercase and uppercase), digits, and underscores, but they must start with a letter (a-z, A-Z) or an underscore (_). They cannot start with a digit (0-9), and they cannot include spaces or special characters other than underscores. Based on these rules, here are the valid variable names from the options you provided:1. BankAccount2. _27_3. 5th_value4. dogs_listThe following variable names are not valid according to Python's naming rules:1. first name (Contains a space)2. book-title (Contains a hyphen)

In Python, variable names must follow certain rules and conventions. They can include letters (both lowercase and uppercase), digits, and underscores, but they must start with a letter (a-z, A-Z) or an underscore (_). They cannot start with a digit (0-9), and they cannot include spaces or special characters other than underscores. Based on these rules, here are the valid variable names from the options you provided:1. BankAccount2. _27_3. 5th_value4. dogs_listThe following variable names are not valid according to Python's naming rules:1. first name (Contains a space)2. book-title (Contains a hyphen)3. stor_txt (Starts with an underscore followed by a lowercase letter, which is not recommended as per naming conventions)