Sure, here are the examples you asked for:

Example 1:
```python
def greet(name): # 'name' is the parameter
print(f"Hello, {name}!")

greet("John") # 'John' is the argument
```

Example 2:
```python
name = "Jane"
greet("Doe") # value argument
greet(name) # variable argument
greet("Mr. " + "Smith") # expression argument
```

Example 3:
```python
def function():
local_var = "I'm local"
print(local_var)

function()
print(local_var) # This will raise a NameError because local_var is not defined in the global scope
```

Example 4:
```python
def greet(unique_name):
print(f"Hello, {unique_name}!")

greet("John")
print(unique_name) # This will raise a NameError because unique_name is not defined in the global scope
```

Example 5:
```python
var = "I'm global"

def function():
var = "I'm local"
print(var) # This will print "I'm local"

function()
print(var) # This will print "I'm global"
```
In Example 5, the local variable inside the function shadows the global variable. Inside the function, the name 'var' refers to the local variable. Outside the function, it refers to the global variable.

Question: Can you explain the concept of variable scope in Python? How does it affect the visibility of variables in different parts of a program?

Question

Sure, here are the examples you asked for:

Example 1:
```python
def greet(name):  # 'name' is the parameter
    print(f"Hello, {name}!")

greet("John")  # 'John' is the argument
```

Example 2:
```python
name = "Jane"
greet("Doe")  # value argument
greet(name)  # variable argument
greet("Mr. " + "Smith")  # expression argument
```

Example 3:
```python
def function():
    local_var = "I'm local"
    print(local_var)

function()
print(local_var)  # This will raise a NameError because local_var is not defined in the global scope
```

Example 4:
```python
def greet(unique_name):
    print(f"Hello, {unique_name}!")

greet("John")
print(unique_name)  # This will raise a NameError because unique_name is not defined in the global scope
```

Example 5:
```python
var = "I'm global"

def function():
    var = "I'm local"
    print(var)  # This will print "I'm local"

function()
print(var)  # This will print "I'm global"
```
In Example 5, the local variable inside the function shadows the global variable. Inside the function, the name 'var' refers to the local variable. Outside the function, it refers to the global variable.

Question: Can you explain the concept of variable scope in Python? How does it affect the visibility of variables in different parts of a program?

Knowee AI · Accepted Answer