How to get a triangle of O’s

by

Here’s a function to do it:

def text_triangle(base, char):
    return '\n'.join(' ' * (base-i) + char * i for i in range(1, base+1))

print(text_triangle(6, 'o'))

Not going to hold the fact that you just posted a screenshot against you because this question has a lot to do with formatting, which is difficult to represent in markdown.

EDIT

You got the correct number of spaces on each line (good job!). The problem with your code was that you were only putting a single 'o' on each line instead of filling the rest of the line with 'o'‘s.

base = 6
for r in range(base-1, -1, -1):
    for blank in range(0, r):
        print(' ', end='')
    for o in range(r, base):
        print('o', end='')
    print()

To do that, we can just write another nested for-loop that picks up where the last nested for-loop left off, at r, and go until the end of the line, base. Finally, we need to call print() with no arguments at the bottom of the main for-loop to get a newline character. I hope this is more explanatory than my quick answer before.

The above fits your teacher’s requirements, but is far from the best solution. If I had to answer this question without any restrictions (i.e. using nested for-loops), I would probably do something like this:

base = 6
for r in range(base):
    print('{:>{}}'.format('o' * (r+1), base))

This solution uses str.format() and the format specification mini-language to right align the 'o'‘s.

More Related Contents:

  1. How to align text in python
  2. Deleting item from list
  3. Accessing dict keys like an attribute?
  4. Find the most common element in a list
  5. Retrieving parameters from a URL
  6. How do I append one string to another in Python?
  7. Choosing a file in Python with simple Dialog
  8. logger configuration to log to file and print to stdout
  9. Class that acts as mapping for **unpacking
  10. dlib installation on Windows 10
  11. How to share variables across scripts in python?
  12. shuffling/permutating a DataFrame in pandas
  13. Use of colon in variable declaration [duplicate]
  14. subprocess.Popen() error (No such file or directory) when calling command with arguments as a string
  15. Why am I getting a NameError when I try to call my function?
  16. How to filter a dataframe of dates by a particular month/day?
  17. Tkinter: How to get frame in canvas window to expand to the size of the canvas?
  18. How do I implement interfaces in python?
  19. Writing a csv file into SQL Server database using python
  20. Intercept method calls in Python
  21. 104, ‘Connection reset by peer’ socket error, or When does closing a socket result in a RST rather than FIN?
  22. Why is np.where faster than pd.apply
  23. How do I get a result (output) from a function? How can I use the result later?
  24. Python-FTP download all files in directory
  25. How do I set permissions (attributes) on a file in a ZIP file using Python’s zipfile module?
  26. Parse annotations from a pdf
  27. Case insensitive user input strings
  28. Rename columns in Pandas based on a dictionary
  29. Trouble installing SciPy on windows
  30. python get only class attribute no superclasses

Leave a Comment