Initial Query

Write a python function `dedent(str)` that takes as input a string of python code and de-dents it maximally. Lines that are entirely blank don't count.

LLM Generation

Query

Write a python function `dedent(str)` that takes as input a string of python code and de-dents it maximally. Lines that are entirely blank don't count.

Output

# Python Dedent Function Here's a function that de-dents a Python code string by removing the maximum common indentation from all non-blank lines: 

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def dedent(s):
    """
    De-dent a string of Python code by removing the maximum common indentation.
    Completely blank lines are ignored when calculating the indentation level.
    
    Args:
        s: A string containing Python code
        
    Returns:
        The de-dented string
    """
    # Split the input string into lines
    lines = s.splitlines()
    
    # Find the minimum indentation level among non-blank lines
    min_indent = float('inf')
    for line in lines:
        # Skip blank lines when calculating minimum indentation
        if not line.strip():
            continue
        # Count leading whitespace
        indent = len(line) - len(line.lstrip())
        min_indent = min(min_indent, indent)
    
    # If all lines are blank or min_indent is still infinite, 
    # return the original string
    if min_indent == float('inf'):
        return s
    
    # Remove the minimum indentation from each line
    dedented_lines = []
    for line in lines:
        if not line.strip():  # Blank line
            dedented_lines.append('')
        else:  # Non-blank line
            dedented_lines.append(line[min_indent:])
    
    # Join the lines back together
    result = '\n'.join(dedented_lines)
    
    # Preserve the original's final newline if present
    if s.endswith('\n'):
        result += '\n'
    
    return result
This function: 1. Splits the string into lines 2. Finds the minimum indentation across all non-blank lines 3. Removes exactly that many spaces from the beginning of each non-blank line 4. Preserves completely blank lines 5. Preserves the original's trailing newline if present For example, if you have code indented with 8 spaces, it will remove 8 spaces from every line, bringing the least-indented line to the left margin.

Extract Code

I extracted the following code from that output: 

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def dedent(s):
    """
    De-dent a string of Python code by removing the maximum common indentation.
    Completely blank lines are ignored when calculating the indentation level.
    
    Args:
        s: A string containing Python code
        
    Returns:
        The de-dented string
    """
    # Split the input string into lines
    lines = s.splitlines()
    
    # Find the minimum indentation level among non-blank lines
    min_indent = float('inf')
    for line in lines:
        # Skip blank lines when calculating minimum indentation
        if not line.strip():
            continue
        # Count leading whitespace
        indent = len(line) - len(line.lstrip())
        min_indent = min(min_indent, indent)
    
    # If all lines are blank or min_indent is still infinite, 
    # return the original string
    if min_indent == float('inf'):
        return s
    
    # Remove the minimum indentation from each line
    dedented_lines = []
    for line in lines:
        if not line.strip():  # Blank line
            dedented_lines.append('')
        else:  # Non-blank line
            dedented_lines.append(line[min_indent:])
    
    # Join the lines back together
    result = '\n'.join(dedented_lines)
    
    # Preserve the original's final newline if present
    if s.endswith('\n'):
        result += '\n'
    
    return result

Run Code Interpreter

Running the following program: 

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def dedent(s):
    """
    De-dent a string of Python code by removing the maximum common indentation.
    Completely blank lines are ignored when calculating the indentation level.
    
    Args:
        s: A string containing Python code
        
    Returns:
        The de-dented string
    """
    # Split the input string into lines
    lines = s.splitlines()
    
    # Find the minimum indentation level among non-blank lines
    min_indent = float('inf')
    for line in lines:
        # Skip blank lines when calculating minimum indentation
        if not line.strip():
            continue
        # Count leading whitespace
        indent = len(line) - len(line.lstrip())
        min_indent = min(min_indent, indent)
    
    # If all lines are blank or min_indent is still infinite, 
    # return the original string
    if min_indent == float('inf'):
        return s
    
    # Remove the minimum indentation from each line
    dedented_lines = []
    for line in lines:
        if not line.strip():  # Blank line
            dedented_lines.append('')
        else:  # Non-blank line
            dedented_lines.append(line[min_indent:])
    
    # Join the lines back together
    result = '\n'.join(dedented_lines)
    
    # Preserve the original's final newline if present
    if s.endswith('\n'):
        result += '\n'
    
    return result





answer = dedent('''    print("hello")
    print("world")

    if True:
        print("true")
    else:
        print("false")''')
expected = """print("hello")
print("world")

if True:
    print("true")
else:
    print("false")"""
assert answer == expected, f'Wrong answer; got {answer} instead of {expected}'
print('All tests passed')
And got the output: All tests passed

Substring Evaluation

Testing if the previous output contains the string All tests passed: True

Initial Query

Write a python function `dedent(str)` that takes as input a string of python code and de-dents it maximally. Lines that are entirely blank don't count.

LLM Generation

Query

Write a python function `dedent(str)` that takes as input a string of python code and de-dents it maximally. Lines that are entirely blank don't count.

Output

# Python De-indentation Function Let me create a function that removes the maximum possible consistent indentation from a Python code string. The key is to find the minimal leading whitespace across all non-empty lines and then remove exactly that amount from each line. 

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def dedent(str):
    """
    De-indents a string of Python code by removing the maximum common
    indentation from all non-empty lines.
    
    Args:
        str: A string containing Python code
        
    Returns:
        A string with the minimum indentation removed from all lines
    """
    # Keep track of trailing newline
    has_trailing_newline = str.endswith('\n')
    
    # Split into lines
    lines = str.splitlines()
    
    # Find the non-empty lines (those with something other than whitespace)
    non_empty_lines = [line for line in lines if line.strip()]
    
    # If all lines are empty, return the original string
    if not non_empty_lines:
        return str
    
    # Determine the minimum indentation for non-empty lines
    # We calculate how much whitespace is at the start of each non-empty line
    min_indent = min(len(line) - len(line.lstrip()) for line in non_empty_lines)
    
    # Remove the minimum indentation from all lines
    dedented_lines = []
    for line in lines:
        if line.strip():  # If it's not an empty line
            dedented_lines.append(line[min_indent:])
        else:
            dedented_lines.append(line)  # Keep empty lines as they are
    
    # Join the lines back together
    result = '\n'.join(dedented_lines)
    
    # Restore trailing newline if it was present in the original
    if has_trailing_newline:
        result += '\n'
    
    return result
The function works by: 1. Preserving any trailing newline 2. Splitting the input into lines 3. Identifying non-empty lines 4. Finding the minimum amount of indentation in any non-empty line 5. Removing exactly that many spaces from the beginning of each non-empty line 6. Leaving blank lines unchanged 7. Joining everything back together with the original line endings preserved This handles various edge cases like strings with varying indentation, empty strings, and strings with only blank lines.

Extract Code

I extracted the following code from that output: 

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def dedent(str):
    """
    De-indents a string of Python code by removing the maximum common
    indentation from all non-empty lines.
    
    Args:
        str: A string containing Python code
        
    Returns:
        A string with the minimum indentation removed from all lines
    """
    # Keep track of trailing newline
    has_trailing_newline = str.endswith('\n')
    
    # Split into lines
    lines = str.splitlines()
    
    # Find the non-empty lines (those with something other than whitespace)
    non_empty_lines = [line for line in lines if line.strip()]
    
    # If all lines are empty, return the original string
    if not non_empty_lines:
        return str
    
    # Determine the minimum indentation for non-empty lines
    # We calculate how much whitespace is at the start of each non-empty line
    min_indent = min(len(line) - len(line.lstrip()) for line in non_empty_lines)
    
    # Remove the minimum indentation from all lines
    dedented_lines = []
    for line in lines:
        if line.strip():  # If it's not an empty line
            dedented_lines.append(line[min_indent:])
        else:
            dedented_lines.append(line)  # Keep empty lines as they are
    
    # Join the lines back together
    result = '\n'.join(dedented_lines)
    
    # Restore trailing newline if it was present in the original
    if has_trailing_newline:
        result += '\n'
    
    return result

Run Code Interpreter

Running the following program: 

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def dedent(str):
    """
    De-indents a string of Python code by removing the maximum common
    indentation from all non-empty lines.
    
    Args:
        str: A string containing Python code
        
    Returns:
        A string with the minimum indentation removed from all lines
    """
    # Keep track of trailing newline
    has_trailing_newline = str.endswith('\n')
    
    # Split into lines
    lines = str.splitlines()
    
    # Find the non-empty lines (those with something other than whitespace)
    non_empty_lines = [line for line in lines if line.strip()]
    
    # If all lines are empty, return the original string
    if not non_empty_lines:
        return str
    
    # Determine the minimum indentation for non-empty lines
    # We calculate how much whitespace is at the start of each non-empty line
    min_indent = min(len(line) - len(line.lstrip()) for line in non_empty_lines)
    
    # Remove the minimum indentation from all lines
    dedented_lines = []
    for line in lines:
        if line.strip():  # If it's not an empty line
            dedented_lines.append(line[min_indent:])
        else:
            dedented_lines.append(line)  # Keep empty lines as they are
    
    # Join the lines back together
    result = '\n'.join(dedented_lines)
    
    # Restore trailing newline if it was present in the original
    if has_trailing_newline:
        result += '\n'
    
    return result





answer = dedent('''    print("hello")
    print("world")

    if True:
        print("true")
    else:
        print("false")''')
expected = """print("hello")
print("world")

if True:
    print("true")
else:
    print("false")"""
assert answer == expected, f'Wrong answer; got {answer} instead of {expected}'
print('All tests passed')
And got the output: All tests passed

Substring Evaluation

Testing if the previous output contains the string All tests passed: True