PYTHON LESSON
File Handling
Files are streams read/written in modes.
Use pathlib for file paths.
Assuming file exists.
Read this next
File Handling is used in many real programs. Right now you are in Real-World Tools.
Core idea:
Files are streams read/written in modes.
Read the example code on this page. Then write your own short version.
Tip:
Use pathlib for file paths.
Watch out for:
Assuming file exists.
Your challenge:
Read text file and count lines, words.
Use the editor in the challenge lab. When your output looks correct and there is no error, press the green button to unlock the next topic.
Example code
Copy this example if it helps. Change it so it matches File Handling.
# Topic: File Handling
def main():
sample = "edit me"
# TODO: apply File Handling concept here
result = sample
print("Result:", result)
if __name__ == "__main__":
main()
Challenge
Read text file and count lines, words.
Before you can finish: your output should include at least 16 characters; at least 1 non-empty line(s); no crash traceback—fix errors until the program runs cleanly.
Use Run. Read the output. Change your code until the task is done.
Starter reference
# Challenge starter for File Handling
def solve():
# Write your solution here
pass
print("Update solve() and run")Your code
The first Run may load Python in your browser (one-time). Later runs are faster.