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python-demo
提交 f302e734 编写于 作者: 秦 秦英杰
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fix:函数习题

上级 21b5fdec
隐藏空白更改
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Showing with 72 addition and 48 deletion
.idea/workspace.xml
浏览文件 @ f302e734
...@@ -4,24 +4,8 @@ ...@@ -4,24 +4,8 @@
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...@@ -31,37 +15,40 @@ ...@@ -31,37 +15,40 @@
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...@@ -204,13 +191,29 @@ ...@@ -204,13 +191,29 @@
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......
04_函数/02_函数基础定义练习案例.py
浏览文件 @ f302e734
""" """
演示函数基础定义练习案例：自动查核酸 演示函数基础定义练习案例：自动查核酸
""" """
# 定义函数 # 定义函数
def check(): def check():
# 编写函数体输出信息 # 编写函数体输出信息
print("欢迎来到黑马程序员！\n请出示您的健康码以及72小时核酸证明！") print("欢迎来到黑马程序员！\n请出示您的健康码以及72小时核酸证明！")
# 调用函数 # 调用函数
check() check()
\ No newline at end of file
04_函数/03_list列表的循环.py
浏览文件 @ f302e734
...@@ -8,7 +8,7 @@ def list_while_func(): ...@@ -8,7 +8,7 @@ def list_while_func():
使用while循环遍历列表的演示函数 使用while循环遍历列表的演示函数
:return: None :return: None
""" """
my_list = ["传智教育", "黑马程序员", "Python"] my_list = ["传智教育", "程序员", "Python"]
# 循环控制变量通过下标索引来控制，默认0 # 循环控制变量通过下标索引来控制，默认0
# 每一次循环将下标索引变量+1 # 每一次循环将下标索引变量+1
# 循环条件：下标索引变量 < 列表的元素数量 # 循环条件：下标索引变量 < 列表的元素数量
......
04_函数/04_函数的参数.py
浏览文件 @ f302e734
...@@ -2,10 +2,12 @@ ...@@ -2,10 +2,12 @@
演示函数使用参数 演示函数使用参数
""" """
# 定义2数相加的函数，通过参数接收被计算的2个数字 # 定义2数相加的函数，通过参数接收被计算的2个数字
def add(x, y, z): def add(x, y, z):
result = x + y + z result = x + y + z
print(f"{x} + {y} + {z}的计算结果是：{result}") print(f"{x} + {y} + {z}的计算结果是：{result}")
# 调用函数，传入被计算的2个数字 # 调用函数，传入被计算的2个数字
add(5, 6, 7) add(5, 6, 7)
04_函数/07_None.py
浏览文件 @ f302e734
...@@ -2,22 +2,28 @@ ...@@ -2,22 +2,28 @@
演示特殊字面量：None 演示特殊字面量：None
""" """
# 无return语句的函数返回值 # 无return语句的函数返回值
def say_hi(): def say_hi():
print("你好呀") print("你好呀")
result = say_hi() result = say_hi()
print(f"无返回值函数，返回的内容是：{result}") print(f"无返回值函数，返回的内容是：{result}")
print(f"无返回值函数，返回的内容类型是：{type(result)}") print(f"无返回值函数，返回的内容类型是：{type(result)}")
# 主动返回None的函数 # 主动返回None的函数
def say_hi2(): def say_hi2():
print("你好呀") print("你好呀")
return None return None
result = say_hi2() result = say_hi2()
print(f"无返回值函数，返回的内容是：{result}") print(f"无返回值函数，返回的内容是：{result}")
print(f"无返回值函数，返回的内容类型是：{type(result)}") print(f"无返回值函数，返回的内容类型是：{type(result)}")
# None用于if判断 # None用于if判断
def check_age(age): def check_age(age):
if age > 18: if age > 18:
...@@ -25,6 +31,7 @@ def check_age(age): ...@@ -25,6 +31,7 @@ def check_age(age):
else: else:
return None return None
result = check_age(16) result = check_age(16)
if not result: if not result:
# 进入if表示result是None值 也就是False # 进入if表示result是None值 也就是False
......
04_函数/08_函数的说明文档.py
浏览文件 @ f302e734
...@@ -2,6 +2,7 @@ ...@@ -2,6 +2,7 @@
演示对函数进行文档说明 演示对函数进行文档说明
""" """
# 定义函数，进行文档说明 # 定义函数，进行文档说明
def add(x, y): def add(x, y):
""" """
...@@ -14,5 +15,5 @@ def add(x, y): ...@@ -14,5 +15,5 @@ def add(x, y):
print(f"2数相加的结果是：{result}") print(f"2数相加的结果是：{result}")
return result return result
add(5, 6)
add(5, 6)
04_函数/09_函数的嵌套调用.py
浏览文件 @ f302e734
...@@ -2,9 +2,12 @@ ...@@ -2,9 +2,12 @@
演示嵌套调用函数 演示嵌套调用函数
""" """
# 定义函数func_b # 定义函数func_b
def func_b(): def func_b():
print("---2---") print("---2---")
# 定义函数func_a，并在内部调用func_b # 定义函数func_a，并在内部调用func_b
def func_a(): def func_a():
print("---1---") print("---1---")
...@@ -13,5 +16,7 @@ def func_a(): ...@@ -13,5 +16,7 @@ def func_a():
func_b() func_b()
print("---3---") print("---3---")
# 调用函数func_a # 调用函数func_a
func_a() func_a()
04_函数/10_变量的作用域.py
浏览文件 @ f302e734
...@@ -42,14 +42,17 @@ ...@@ -42,14 +42,17 @@
# global关键字，在函数内声明变量为全局变量 # global关键字，在函数内声明变量为全局变量
num = 200 num = 200
def test_a(): def test_a():
print(f"test_a: {num}") print(f"test_a: {num}")
def test_b(): def test_b():
global num # 设置内部定义的变量为全局变量 global num # 设置内部定义的变量为全局变量
num = 500 num = 500
print(f"test_b: {num}") print(f"test_b: {num}")
test_a() test_a()
test_b() test_b()
print(num) print(num)
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