Yes, that's the rule in Python (and in many other programming languages, as well).
In programming languages, identifiers are used to name variables, functions, etc. In most languages, identifiers must start with a letter (uppercase or lowercase) or an underscore, followed by letters, digits, or underscores. Therefore, not all printable ASCII characters can be used in an identifier. Symbols such as @, #, $, and % are typically not allowed in identifiers.
Identifiers refers to the names of variables, functions and array. These are user defined names and consist of a sequence of letters and digits, with a letters as a first character.Both uppercase and lowercase letters are permitted, although lowercase letters are commonly used. The underscore character is also permitted in identifiers. It is usually used as a link between two words in long identifiers. In C, identifiers may contain any alphanumeric characters (a-z, A-Z, 0-9) as well as underscores (_), but must not begin with a number.
the name of an identifier consists of letters and digits but name always starts with a letter.
In C++ we provide names for the entities we create, the variables, functions and types in our programs. These names, or identifiers, are required to conform to some simple rules.An identifier must start with a letter and is comprised of a sequence of letters and digits. Somewhat surprisingly, in this context the underscore _ is considered to be a letter (although there are conditions associated with its use). There's no restriction on the length of an identifier.
No. Neither is a10 and A10.
In programming languages, identifiers are used to name variables, functions, etc. In most languages, identifiers must start with a letter (uppercase or lowercase) or an underscore, followed by letters, digits, or underscores. Therefore, not all printable ASCII characters can be used in an identifier. Symbols such as @, #, $, and % are typically not allowed in identifiers.
If you know what BNF is: Identifier -> Start Cont Start -> letter | underline Cont -> empty | (letter | underline | digit) Cont
Identifiers refers to the names of variables, functions and array. These are user defined names and consist of a sequence of letters and digits, with a letters as a first character.Both uppercase and lowercase letters are permitted, although lowercase letters are commonly used. The underscore character is also permitted in identifiers. It is usually used as a link between two words in long identifiers. In C, identifiers may contain any alphanumeric characters (a-z, A-Z, 0-9) as well as underscores (_), but must not begin with a number.
the name of an identifier consists of letters and digits but name always starts with a letter.
pond turtle pignose turtle plated lizard pipe snake python pit viper
python
In C++ we provide names for the entities we create, the variables, functions and types in our programs. These names, or identifiers, are required to conform to some simple rules.An identifier must start with a letter and is comprised of a sequence of letters and digits. Somewhat surprisingly, in this context the underscore _ is considered to be a letter (although there are conditions associated with its use). There's no restriction on the length of an identifier.
Some snakes that start with a are, the Anaconda, the African Rock Python, and the Andean Milk Snake.
Python
no you can not breed a python with an eel , because there breeding strategies are completely different for a start eel's mate under the water where as python's do not as they are reptiles and breathe air!
ophidian
No. Neither is a10 and A10.