Snake to Camel Case

Zero-dependency Python snippets for converting snake_case to camelCase using the standard library.

4 snippets available in this sub-category.

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Simple

Convert snake_case to camelCase

string snake camel case convert text

Convert snake_case string to camelCase

def snake_to_camel(text):
    """Convert snake_case to camelCase."""
    words = text.split("_")
    return words[0] + "".join(word.capitalize() for word in words[1:])


text = "snake_case_example"
result = snake_to_camel(text)
print(result)  # "snakeCaseExample"

Notes

• Splits by underscore
• Capitalizes all words except first
• Joins without separators
• Handles multiple underscores

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Convert with underscore cleaning

string snake camel case clean regex text

Convert snake_case to camelCase with underscore cleaning

import re


def snake_to_camel_clean(text):
    """Convert snake_case to camelCase, handling multiple underscores."""
    # Remove leading/trailing underscores and replace multiple with single
    clean_text = re.sub(r"_+", "_", text.strip("_"))
    words = clean_text.split("_")
    return words[0] + "".join(word.capitalize() for word in words[1:])


text = "__snake___case__example__"
result = snake_to_camel_clean(text)
print(result)  # "snakeCaseExample"

Notes

• Removes leading/trailing underscores
• Handles multiple consecutive underscores
• Produces clean camelCase
• Useful for data cleaning

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Complex

Convert with acronym preservation

string snake camel case acronyms preserve text

Convert snake_case to camelCase with acronym preservation

def snake_to_camel_with_acronyms(text):
    """Convert snake_case to camelCase with acronym preservation."""
    words = text.split("_")
    result = [words[0]]

    for word in words[1:]:
        if word.isupper():
            # Preserve acronyms as-is
            result.append(word)
        else:
            # Capitalize regular words
            result.append(word.capitalize())

    return "".join(result)


text = "http_request_url"
result = snake_to_camel_with_acronyms(text)
print(result)  # "httpRequestUrl"

text = "xml_parser_api"
result = snake_to_camel_with_acronyms(text)
print(result)  # "xmlParserApi"

Notes

• Preserves existing acronyms
• Handles mixed case words
• Maintains readability
• Useful for API conversions

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Convert with custom options

string snake case convert multiple formats text

Convert snake_case to various case formats

def snake_to_case(text, case="camel", separator=""):
    """Convert snake_case to various case formats."""
    words = text.split("_")

    if case == "camel":
        # camelCase: first word lowercase, rest capitalized
        return words[0] + "".join(word.capitalize() for word in words[1:])
    elif case == "pascal":
        # PascalCase: all words capitalized
        return "".join(word.capitalize() for word in words)
    elif case == "kebab":
        # kebab-case: lowercase with hyphens
        return "-".join(word.lower() for word in words)
    elif case == "title":
        # Title Case: capitalized with spaces
        return " ".join(word.capitalize() for word in words)
    else:
        return text


# Convert to different cases
text = "snake_case_example"

camel = snake_to_case(text, "camel")
print(camel)  # "snakeCaseExample"

pascal = snake_to_case(text, "pascal")
print(pascal)  # "SnakeCaseExample"

kebab = snake_to_case(text, "kebab")
print(kebab)  # "snake-case-example"

title = snake_to_case(text, "title")
print(title)  # "Snake Case Example"

Notes

• Supports multiple case formats
• Flexible conversion options
• Handles different naming conventions
• Useful for code generation

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🔗 Cross-References

• Reference: See 📂 Camel to Snake

🏷️ Tags

string, snake, camel, case, convert, acronyms, formats, text

📝 Notes

• Use for converting snake_case to camelCase and other formats
• Preserves acronyms and handles multiple naming conventions
• See related snippet for reverse conversion