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In this course, you will get a comprehensive overview of Python. You will start by laying the foundation and learning the introductory topics like operators, conditional statements, functions, loops, assignment statements, and more. You will then move onto more advanced topics such as classes and inheritance, iterators, list comprehensions, and dictionaries. Along with this, you will also get to explore the concept of testing and take a look at how GUI applications can be designed using Tkinter, Python's standard GUI library. 

By the time you're done, you'll be able to hit the ground running and be equipped with the tools that will allow you to be productive in Python.

Python 3: From Beginner to Advanced

```python
from math import exp

num = 5
exp_num = exp(num)
print(exp_num)
```

```python
import math

num = 5
exp_num = math.exp(num)
print(exp_num)
```

```python
import exp from math

num = 5
exp_num = exp(num)
print(exp_num)
```

```python
from math import *

num = 5
exp_num = exp(num)
print(exp_num)
```

Which of the following is the correct way to import and use the `exp` function from the `math` module? Select all that apply. 

Which of the following is the correct way to import and use the <code>exp</code> function from the <code>math</code> module? Select all that apply.

Which of the following commands can be used to get the names of the entire contents (files and directories) of the specified directory?


Which of the following commands can be used to get the names of the entire contents (files and directories) of the specified directory?

What will the output of the following code be?

```python
from statistics import mode

mylist = [8, 3, 1, 2, 3, 1, 8, 7, 9, 3, 12, 26, 8, 3, 9]
print(mode(mylist))
```

What will the output of the following code be?
<pre><code class="language-python">from statistics import mode

mylist = [8, 3, 1, 2, 3, 1, 8, 7, 9, 3, 12, 26, 8, 3, 9]
print(mode(mylist))
</code></pre>

What will the value of `res` be at the end of the following code?

```python
from math import *

mynum = -25.587236
res = sqrt(abs(ceil(mynum)))
print(res)
```

What will the value of <code>res</code> be at the end of the following code?
<pre><code class="language-python">from math import *

mynum = -25.587236
res = sqrt(abs(ceil(mynum)))
print(res)
</code></pre>

```python
import os

for path, dirnames, filenames in os.walk('./'):
    for file in filenames:
        if 'inner' in file:
            mypath = os.path.join(path, file)
            os.remove(mypath)
            print("File removed")
```

```python
import os

for filenames in os.listdir('./'):
    for file in filenames:
        if 'inner' in file:
            os.remove(file)
            print("File removed")
```

```python
import os

for path, dirnames, filenames in os.walk('./'):
    for file in filenames:
        if 'inner' in file:
            mypath = os.path.join(path, file)
            os.rmdir(mypath)
            print("File removed")
```

```python
import os

for filenames in os.listdir('./'):
    for file in filenames:
        if 'inner' in file:
            os.rmdir(file)
            print("File removed")
```

Let's assume you have a directory named `root` on your system. The contents of this `root` directory look something like the following:

```python
# .root
# ├── dir1
# │   ├── inner_dir1
# │   │   └── inner.txt
# │   ├── outer1.txt
# │   └── outer2.txt
# ├── dir2
# │   └── input.txt
# └── myfile.txt
```
Which of the following codes can be used to remove the `inner.txt` file?

Let’s assume you have a directory named <code>root</code> on your system. The contents of this <code>root</code> directory look something like the following:
<pre><code class="language-python"># .root
# ├── dir1
# │ ├── inner_dir1
# │ │ └── inner.txt
# │ ├── outer1.txt
# │ └── outer2.txt
# ├── dir2
# │ └── input.txt
# └── myfile.txt
</code></pre>
Which of the following codes can be used to remove the <code>inner.txt</code> file?

Take this quiz to test your understanding of the concepts explained in this chapter! 

Introduction

The Absolute Bare Minimum

Better Tools

Classes

Getting Fancy

Testing

Graphical User Interfaces

Modules

Appendix

I Guess We're Doing Python Now Exam

Quiz