Commit ca8de80

authored

Create kc42.md

1 parent 178378b commit ca8de80Copy full SHA for ca8de80

File tree

1 file changed

+58

-0

lines changed

kc
- kc42.md

1 file changed

+58

-0

lines changed

`‎kc/kc42.md‎`

Lines changed: 58 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,58 @@`
	`1`	`+# 4-2 Python 内置函数`
	`2`	`+python 的内置函数有很多,大家可以自行百度一下,因为实在是太多了,没法一一进行举例介绍,大家也没有必要全部记住,只要有个大概的印象`
	`3`	`+`
	`4`	`+在项目的实战中,再自行百度去了解实际的用法`
	`5`	`+`
	`6`	`+下面咱们简单介绍几个内置函数的用法`
	`7`	`+`
	`8`	`+- len(value) 返回一个字符串的找度`
	`9`	`+- max(value) 返回字符串中的最大的字母`
	`10`	`+- min(value) 返回字符串中最小的字母`
	`11`	`+- abs(value) 取一个数的绝对值`
	`12`	`+- round(value, n) 对一个数字进行四舍五入,并保留n位小数`
	`13`	`+### 代码区 1`
	`14`	+```python
	`15`	`+1 value = 'python'`
	`16`	`+`
	`17`	`+2 print('我共有', len(value), '个字符')`
	`18`	`+`
	`19`	`+3`
	`20`	+```
	`21`	`+![4](https://user-images.githubusercontent.com/103555341/163546933-bee710b5-943e-454e-b00d-922d2b897614.jpg)`
	`22`	+```python
	`23`	`+我共有 6 个字符`
	`24`	+```
	`25`	`+### 代码区 2`
	`26`	+```python
	`27`	`+1 x = 3.1415926`
	`28`	`+2 # 四舍五入保留3位小数`
	`29`	`+3 print(round(x, 3))`
	`30`	`+4 # 四舍五入保留2位小数`
	`31`	`+5 print(round(x, 2))`
	`32`	`+6`
	`33`	+```
	`34`	`+![4](https://user-images.githubusercontent.com/103555341/163546933-bee710b5-943e-454e-b00d-922d2b897614.jpg)`
	`35`	+```python
	`36`	`+3.142`
	`37`	`+3.14`
	`38`	+```
	`39`	`+### 代码区 3`
	`40`	+```python
	`41`	`+1 # 练习题把上面的函数演练一遍`
	`42`	`+2`
	`43`	+```
	`44`	`+![4](https://user-images.githubusercontent.com/103555341/163546933-bee710b5-943e-454e-b00d-922d2b897614.jpg)`
	`45`	`+`
	`46`	`+`
	`47`	`+`
	`48`	`+`
	`49`	`+`
	`50`	`+`
	`51`	`+`
	`52`	`+`
	`53`	`+`
	`54`	`+`
	`55`	`+`
	`56`	`+`
	`57`	`+`
	`58`	`+`

0 commit comments

Comments

(0)

Navigation Menu

Search code, repositories, users, issues, pull requests...

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Commit ca8de80

File tree

1 file changed

1 file changed

`‎kc/kc42.md‎`

0 commit comments