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Lab 12, Part 4: File traversal treasure hunt
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# Lab 12, Part 4: File traversal treasure hunt
## Setup
In `lab12/random` there's a bunch of random folders with cryptic, one-letter names, nested several levels deep.
As you can see, some of the folders contain a text file.
Most of these text files contain the string `not in here`:
**Some** of these text files contains the string `treasure!`:
Your job is to write a function that “finds the treasure”; i.e. the file(s) that contain the string `treasure!`.
## Task 1.
In `lab12/treasureHunt.py` you will complete the function `findTheTreasure`.
__Before starting, read through all the instructions and hints below.__
Your `findTheTreasure` function should recursively traverse all the folders/files in the given directory and when it encounters a file that contains
the string `treasure!` it should **print** something like the following:
If there was only 1 “treasure”:
```xml
Found treasure in random/v/x/e/t/w.txt
```
If there were multiple “treasures”:
```xml
Found treasure in random/v/x/e/t/w.txt
Found treasure in random/b/f/e/n/e.txt
Found treasure in random/g/c/x/w/r.txt
```
(These are just examples, they are not the actual answer(s) you're looking for)
### Hint 1
In [Lecture 22, Slide 15 *File Tree Traversal*](http://cs111.wellesley.edu/content/lectures/lec22_fileTrees/files/lec22_fileTrees_withBlanks.pdf), you saw the function `printFileTreeBetter`:
```py
def printFileTreeBetter(root):
if os.path.isfile(root):
print root
elif os.path.isdir(root):
print root
for fileOrDir in os.listdir(root):
printFileTreeBetter(os.path.join(root, fileOrDir))
```
This function can act as a starting point for this task as it shows how to recursively iterate through a directory.
### Hint 2
When your function encounters a file, it needs to open it and see if it contains the treasure.
Refer to [Lecture 17, Slides 6-8](http://cs111.wellesley.edu/content/lectures/lec17_files/files/lec17_files.pdf) which cover three different ways to read the contents of a file.
### Check your results
You can confirm the accuracy of your results by opening the file(s) your function reports and confirming those file do in fact contain the string `treasure!`.
Once you're confident your function is producing the correct answer, you can also check it against the solution which you can see by clicking here.
Expected results:
```xml
Found treasure in random/a/c/x/z/w.txt
Found treasure in random/w/x/g/s.txt
```
### Check again with the pirates folder 
Run your code on the `pirates` folder, which
has several subfolders with various files. Your program should find
the files that contain treasure. Click here to see pirates treasure.
Expected results:
```xml
Found treasure in pirates/fiji/bahamas/food.txt
Found treasure in pirates/stJohn/malta/tents.txt
Found treasure in pirates/tahiti/kiribati/gold.txt
Found treasure in pirates/tahiti/kiribati/phillipines/haiti/trinkets.txt
Found treasure in pirates/tahiti/kiribati/taiwan/madagascar/guam/silver.txt
Found treasure in pirates/tahiti/kiribati/taiwan/madagascar/wine.txt
Found treasure in pirates/tahiti/kiribati/taiwan/turtles.txt
```
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