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

Certainly! Below is a Python function named `dedent` that removes the maximum common leading whitespace from each line in a given string of Python code. Lines that are entirely blank are ignored when determining the indentation to remove, ensuring that these blank lines remain unaffected. ### Function Explanation 1. **Splitting the Input**: The input string is split into individual lines using the `splitlines()` method. 2. **Determining Minimal Indentation**: - Iterate through each line to calculate the number of leading whitespace characters (spaces or tabs). - Ignore lines that are entirely blank (i.e., lines where `stripped` is empty after removing leading whitespace). - Collect the indentation levels of non-blank lines. - Determine the smallest indentation value among these, which is the number of characters to remove from the start of each line. 3. **Removing Indentation**: - Iterate through each line again. - For non-blank lines, remove the determined minimal indentation from the start. - For blank lines, leave them unchanged. 4. **Reconstructing the String**: The processed lines are joined back together into a single string with newline characters. ### Implementation 

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def dedent(code):
    """
    Removes the maximum common leading whitespace from each line in the input code string.
    Blank lines are ignored in determining the indentation to remove and remain unaffected.
    
    Parameters:
        code (str): A string containing Python code.
        
    Returns:
        str: The dedented version of the input code.
    """
    lines = code.splitlines()
    indent_lengths = []

    # Determine the minimal indentation (ignore blank lines)
    for line in lines:
        stripped = line.lstrip()
        if stripped:  # Non-blank line
            # Calculate leading whitespace length
            leading_whitespace = line[:len(line) - len(stripped)]
            # For tabs, it's safer to count as 4 spaces, but here we'll count actual characters
            indent_lengths.append(len(leading_whitespace))
    
    if indent_lengths:
        min_indent = min(indent_lengths)
    else:
        min_indent = 0  # All lines are blank
    
    dedented_lines = []
    for line in lines:
        stripped = line.lstrip()
        if stripped:
            # Remove the minimal indentation
            dedented_line = line[min_indent:] if len(line) >= min_indent else stripped
            dedented_lines.append(dedented_line)
        else:
            # Leave blank lines untouched
            dedented_lines.append('')
    
    return '\n'.join(dedented_lines)

# Example Usage
if __name__ == "__main__":
    sample_code = """
        def hello_world():
            print("Hello, world!")
        
        class MyClass:
            def method(self):
                pass
    """
    
    print("Original Code:")
    print(sample_code)
    
    dedented = dedent(sample_code)
    
    print("Dedented Code:")
    print(dedented)
### Example Output When you run the above code, it will produce the following output: 
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Original Code:

        def hello_world():
            print("Hello, world!")
        
        class MyClass:
            def method(self):
                pass

Dedented Code:
def hello_world():
    print("Hello, world!")

class MyClass:
    def method(self):
        pass
### Notes - **Handling Tabs vs. Spaces**: This implementation counts leading whitespace characters as-is. If your code uses a mix of tabs and spaces, or if you want to treat a tab as a specific number of spaces (commonly 4), you might need to adjust the indentation calculation accordingly. - **Preservation of Blank Lines**: Blank lines are preserved in their original form. This ensures that the structure and readability of the code remain intact. - **Edge Cases**: If the input string is empty or contains only blank lines, the function will return it unchanged. This `dedent` function provides a straightforward way to normalize the indentation of Python code strings, making it especially useful when processing multi-line string inputs that may have inconsistent indentation.

Extract Code

I extracted the following code from that output: 

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def dedent(code):
    """
    Removes the maximum common leading whitespace from each line in the input code string.
    Blank lines are ignored in determining the indentation to remove and remain unaffected.
    
    Parameters:
        code (str): A string containing Python code.
        
    Returns:
        str: The dedented version of the input code.
    """
    lines = code.splitlines()
    indent_lengths = []

    # Determine the minimal indentation (ignore blank lines)
    for line in lines:
        stripped = line.lstrip()
        if stripped:  # Non-blank line
            # Calculate leading whitespace length
            leading_whitespace = line[:len(line) - len(stripped)]
            # For tabs, it's safer to count as 4 spaces, but here we'll count actual characters
            indent_lengths.append(len(leading_whitespace))
    
    if indent_lengths:
        min_indent = min(indent_lengths)
    else:
        min_indent = 0  # All lines are blank
    
    dedented_lines = []
    for line in lines:
        stripped = line.lstrip()
        if stripped:
            # Remove the minimal indentation
            dedented_line = line[min_indent:] if len(line) >= min_indent else stripped
            dedented_lines.append(dedented_line)
        else:
            # Leave blank lines untouched
            dedented_lines.append('')
    
    return '\n'.join(dedented_lines)

# Example Usage
if __name__ == "__main__":
    sample_code = """
        def hello_world():
            print("Hello, world!")
        
        class MyClass:
            def method(self):
                pass
    """
    
    print("Original Code:")
    print(sample_code)
    
    dedented = dedent(sample_code)
    
    print("Dedented Code:")
    print(dedented)

Run Code Interpreter

Running the following program: 

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def dedent(code):
    """
    Removes the maximum common leading whitespace from each line in the input code string.
    Blank lines are ignored in determining the indentation to remove and remain unaffected.
    
    Parameters:
        code (str): A string containing Python code.
        
    Returns:
        str: The dedented version of the input code.
    """
    lines = code.splitlines()
    indent_lengths = []

    # Determine the minimal indentation (ignore blank lines)
    for line in lines:
        stripped = line.lstrip()
        if stripped:  # Non-blank line
            # Calculate leading whitespace length
            leading_whitespace = line[:len(line) - len(stripped)]
            # For tabs, it's safer to count as 4 spaces, but here we'll count actual characters
            indent_lengths.append(len(leading_whitespace))
    
    if indent_lengths:
        min_indent = min(indent_lengths)
    else:
        min_indent = 0  # All lines are blank
    
    dedented_lines = []
    for line in lines:
        stripped = line.lstrip()
        if stripped:
            # Remove the minimal indentation
            dedented_line = line[min_indent:] if len(line) >= min_indent else stripped
            dedented_lines.append(dedented_line)
        else:
            # Leave blank lines untouched
            dedented_lines.append('')
    
    return '\n'.join(dedented_lines)

# Example Usage
if __name__ == "__main__":
    sample_code = """
        def hello_world():
            print("Hello, world!")
        
        class MyClass:
            def method(self):
                pass
    """
    
    print("Original Code:")
    print(sample_code)
    
    dedented = dedent(sample_code)
    
    print("Dedented Code:")
    print(dedented)





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: 
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Original Code:
        def hello_world():
            print("Hello, world!")</p>
<pre><code>    class MyClass:
        def method(self):
            pass
</code></pre>
<p>Dedented Code:
def hello_world():
    print("Hello, world!")
class MyClass:
    def method(self):
        pass
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

Certainly! Below is a Python function named `dedent` that removes the maximum common leading indentation from a multi-line string of Python code. Blank lines (lines that are entirely whitespace or empty) are ignored when determining the common indentation but are still adjusted accordingly. ### Function Explanation 1. **Splitting the Input:** - The input string is split into individual lines for processing. 2. **Determining the Minimum Indentation:** - Iterate through each line to find the minimum number of leading whitespace characters (spaces and tabs) across all non-blank lines. - Blank lines are skipped in this calculation to ensure they don't affect the dedentation process. 3. **Removing the Minimum Indentation:** - For each line, if it starts with the minimum indentation, that portion is removed. - Lines that don't start with the minimum indentation (including blank lines) are left unchanged or stripped of leading whitespace if they're entirely blank. 4. **Reassembling the Lines:** - The processed lines are joined back together into a single string with newline characters. ### Example Usage 

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code = """
    def foo():
        print("Hello, World!")
        
    foo()
"""

dedented_code = dedent(code)
print(dedented_code)
**Output:** 
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def foo():
    print("Hello, World!")

foo()
### Complete Function Implementation 
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def dedent(s):
    """
    Remove the maximum common leading indentation from each non-blank line in the input string.

    Args:
        s (str): A string containing Python code with possible indentation.

    Returns:
        str: The dedented string with common leading whitespace removed from each non-blank line.
    """
    import re

    # Split the input string into individual lines
    lines = s.splitlines()

    # Initialize the minimum indentation to None
    min_indent = None

    # Regular expression to match leading whitespace
    leading_ws_re = re.compile(r'^[ \t]*')

    # Iterate over each line to find the smallest indentation
    for line in lines:
        stripped = line.lstrip()
        if stripped:  # Non-blank line
            match = leading_ws_re.match(line)
            if match:
                indent = match.group(0)
                # For the first non-blank line, set min_indent
                if min_indent is None:
                    min_indent = indent
                else:
                    # Compare current indent with min_indent to find the common minimum
                    # We need to find the largest common prefix
                    # Convert both to lists for comparison
                    min_len = min(len(indent), len(min_indent))
                    common = 0
                    for i in range(min_len):
                        if indent[i] == min_indent[i]:
                            common += 1
                        else:
                            break
                    # Update min_indent to the common prefix
                    min_indent = min_indent[:common]
    
    # If no non-blank lines, return the original string
    if min_indent is None:
        return s

    # Now remove min_indent from the beginning of each line if it exists
    dedented_lines = []
    for line in lines:
        if line.startswith(min_indent):
            dedented_line = line[len(min_indent):]
        else:
            # If the line is blank (only whitespace), strip all leading whitespace
            if line.strip() == '':
                dedented_line = ''
            else:
                dedented_line = line
        dedented_lines.append(dedented_line)

    # Join the lines back into a single string
    dedented_string = '\n'.join(dedented_lines)
    return dedented_string
### Additional Notes - **Handling Mixed Indentation:** - This function assumes consistent use of spaces and tabs for indentation. Mixed indentation (both spaces and tabs) can lead to unexpected results because tabs are treated as single characters. - **Blank Lines:** - Lines that are entirely blank (containing only whitespace or nothing) are preserved in the output but have their indentation removed. - **Edge Cases:** - If the input string is empty or contains only blank lines, the original string is returned unchanged. Feel free to use and modify this `dedent` function as needed for your Python code processing tasks!

Extract Code

I extracted the following code from that output: 

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def dedent(s):
    """
    Remove the maximum common leading indentation from each non-blank line in the input string.

    Args:
        s (str): A string containing Python code with possible indentation.

    Returns:
        str: The dedented string with common leading whitespace removed from each non-blank line.
    """
    import re

    # Split the input string into individual lines
    lines = s.splitlines()

    # Initialize the minimum indentation to None
    min_indent = None

    # Regular expression to match leading whitespace
    leading_ws_re = re.compile(r'^[ \t]*')

    # Iterate over each line to find the smallest indentation
    for line in lines:
        stripped = line.lstrip()
        if stripped:  # Non-blank line
            match = leading_ws_re.match(line)
            if match:
                indent = match.group(0)
                # For the first non-blank line, set min_indent
                if min_indent is None:
                    min_indent = indent
                else:
                    # Compare current indent with min_indent to find the common minimum
                    # We need to find the largest common prefix
                    # Convert both to lists for comparison
                    min_len = min(len(indent), len(min_indent))
                    common = 0
                    for i in range(min_len):
                        if indent[i] == min_indent[i]:
                            common += 1
                        else:
                            break
                    # Update min_indent to the common prefix
                    min_indent = min_indent[:common]

    # If no non-blank lines, return the original string
    if min_indent is None:
        return s

    # Now remove min_indent from the beginning of each line if it exists
    dedented_lines = []
    for line in lines:
        if line.startswith(min_indent):
            dedented_line = line[len(min_indent):]
        else:
            # If the line is blank (only whitespace), strip all leading whitespace
            if line.strip() == '':
                dedented_line = ''
            else:
                dedented_line = line
        dedented_lines.append(dedented_line)

    # Join the lines back into a single string
    dedented_string = '\n'.join(dedented_lines)
    return dedented_string

if __name__ == "__main__":
    code = """
        def foo():
            print("Hello, World!")
            
        foo()
    """

    dedented_code = dedent(code)
    print(dedented_code)

Run Code Interpreter

Running the following program: 

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def dedent(s):
    """
    Remove the maximum common leading indentation from each non-blank line in the input string.

    Args:
        s (str): A string containing Python code with possible indentation.

    Returns:
        str: The dedented string with common leading whitespace removed from each non-blank line.
    """
    import re

    # Split the input string into individual lines
    lines = s.splitlines()

    # Initialize the minimum indentation to None
    min_indent = None

    # Regular expression to match leading whitespace
    leading_ws_re = re.compile(r'^[ \t]*')

    # Iterate over each line to find the smallest indentation
    for line in lines:
        stripped = line.lstrip()
        if stripped:  # Non-blank line
            match = leading_ws_re.match(line)
            if match:
                indent = match.group(0)
                # For the first non-blank line, set min_indent
                if min_indent is None:
                    min_indent = indent
                else:
                    # Compare current indent with min_indent to find the common minimum
                    # We need to find the largest common prefix
                    # Convert both to lists for comparison
                    min_len = min(len(indent), len(min_indent))
                    common = 0
                    for i in range(min_len):
                        if indent[i] == min_indent[i]:
                            common += 1
                        else:
                            break
                    # Update min_indent to the common prefix
                    min_indent = min_indent[:common]

    # If no non-blank lines, return the original string
    if min_indent is None:
        return s

    # Now remove min_indent from the beginning of each line if it exists
    dedented_lines = []
    for line in lines:
        if line.startswith(min_indent):
            dedented_line = line[len(min_indent):]
        else:
            # If the line is blank (only whitespace), strip all leading whitespace
            if line.strip() == '':
                dedented_line = ''
            else:
                dedented_line = line
        dedented_lines.append(dedented_line)

    # Join the lines back into a single string
    dedented_string = '\n'.join(dedented_lines)
    return dedented_string

if __name__ == "__main__":
    code = """
        def foo():
            print("Hello, World!")
            
        foo()
    """

    dedented_code = dedent(code)
    print(dedented_code)





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: 
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def foo():
    print("Hello, World!")</p>
<p>foo()
All tests passed

Substring Evaluation

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