Python 基本数据类型知识点

name = "abc" type(name)

name = 1 type(name)

name = 12.2 type(name)

name = False type(name)

name = [1, 2, 3] type(name)

name = {'name': 'dzm'} type(name)

name = [] name. name.append( name.copy() name.extend( name.insert( name.remove( name.sort(
name.clear() name.count( name.index( name.pop( name.reverse()
name. ```

help(str) class str(object) | str(object='') -> str | str(bytesorbuffer[, encoding[, errors]]) -> str |
| Create a new string object from the given object. If encoding or | errors is specified, then the object must expose a data buffer | that will be decoded using the given encoding and error handler. | Otherwise, returns the result of object.str() (if defined) | or repr(object). | encoding defaults to sys.getdefaultencoding(). | errors defaults to 'strict'. |
| Methods defined here: |
| add(self, value, /) | Return self+value. |
| contains(self, key, /) | Return key in self. |
| eq(self, value, /) | Return self==value. : ```

name1 = "abc" name2 = "def" # 相加可以进行拼接 print(name1 + name2) abcdef # 乘以数字则会输出指定次数 print(name1 * 3) abcabcabc ```

a = 3 b = 4 print(a > b) False print(a < b) True py a = 3 b = 4 if (a > b): print("成功") else: print("失败") ```

name = []

type(name)

name = ['a', 'b', 'c']

print(name[0]) a

name[0] = 'd' print(name) ['d', 'b', 'c']

name.insert(3, 'a') print(name) ['d', 'b', 'c', 'a']

name.append('f') print(name) ['d', 'b', 'c', 'a', 'f']

name = {'a': 'b'} print(name['a']) b ```