Recently, I'm not sure if it's a built-in function or a method, so I tried to classify the ones I use often.
Click here for all built-in functions
| Built-in functions | function |
|---|---|
| print() | ()Show inside |
| str() | Returns an object of type str |
| int() | Returns an object of type int |
| float() | Returns an object of type float |
| bool() | Returns a bool type object. Empty, 0, None returns False |
| type() | Returns the type of the object |
| input() | Enter a string(Input value is treated as a character string) |
| len() | Get the number of elements |
| abs() | Returns the absolute value |
| sum() | Returns the total |
| max() | Returns the maximum value |
| min() | Returns the minimum value |
| pow(a, b) | Returns a to the bth power |
| range() | Returns a sequence of integers in the specified range |
| round() | Round the value. The second argument is the number after the decimal point |
| hex() | Returns a hexadecimal number |
| oct() | Returns an octal number |
| bin() | Returns a binary number |
| enumerate() | Get the sequence and index. The second argument is the index start number, the default is 0 |
| open() | Open file |
| Method | function | list | Tuple | Remarks | String |
|---|---|---|---|---|---|
| .append() | Add an element to the end of the list | 〇 | |||
| .extend() | Add a sequence to the end of the list. You can add lists, tuples and dictionaries | 〇 | |||
| .reverse() | Reverse the order of list elements | 〇 | |||
| .sort() | Sort list elements | 〇 | |||
| .remove() | Searches for the same element as the specified value and deletes the first element. The element itself is rewritten | 〇 | |||
| .count() | Count how many elements are in the list | 〇 | 〇 | ||
| .pop() | Extract only one element of the specified index | 〇 | 〇 | ||
| .clear() | Delete all elements | 〇 | 〇 | ||
| .keys() | Loop processing for dictionary type key | 〇 | |||
| .values() | Loop processing for dictionary type value | 〇 | |||
| .items() | Loop processing for dictionary type key and value | 〇 | |||
| .keys() | Loop processing for dictionary type key | 〇 | |||
| .values() | Loop processing for dictionary type value | 〇 | |||
| .items() | Loop processing for dictionary type key and value | 〇 | |||
| .upper() | Convert the whole to uppercase | 〇 | |||
| .lower() | Convert the whole to lowercase | 〇 | |||
| .capitalize() | Make the first letter uppercase and the others lowercase | 〇 | |||
| .replace(a, b) | Replace string a with string b | 〇 | |||
| .split() | Split a string by specific characters | 〇 | |||
| .join(sequence) | Get a concatenated string | 〇 | |||
| .index() | Returns the index value at the position where the first specified character appears | 〇 | |||
| .format() | {}To()Replace within | 〇 |
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