pygleam 1.1.0

A lightweight Python package for enhanced print statements with automatic JSON/DataFrame formatting and beautiful colors

Gleam

A lightweight, zero-dependency Python package for beautiful terminal output. Gleam automatically enhances your print statements with colors, smart formatting for JSON/DataFrames, and environment-based configuration—all without changing your code.

Features

• Automatic Beautification - Colors and formatting applied automatically to all print statements
• Smart Object Detection - Automatically detects and formats JSON, arrays, DataFrames, functions, and objects
• JSON String Parsing - Automatically detects and parses JSON strings for beautiful formatting
• Rich Color Scheme - Integers (blue), strings (green), booleans (bold green), null (gray), keys (cyan)
• Environment Modes - Dev/prod modes with optional force printing
• File Logging - Optional logging to files with timestamps and caller information
• Error Preservation - Errors, warnings, and tracebacks remain untouched
• Utility Functions - Timestamps, separators, labels, tables, diffs, and status messages
• Zero Dependencies - Lightweight and fast with no external dependencies

Installation

From PyPI

pip install pygleam

Quick Start

Method 1: Direct Import (Recommended)

from gleam import print
import gleam

# Setup with environment (default: 'dev')
gleam.setup()  # Dev mode - all prints visible
# gleam.setup('prod')  # Production mode - prints hidden by default

# All your prints are now automatically enhanced!
print("Hello, Beautiful World!")

Method 2: Traditional Import

import gleam

gleam.setup()  # Monkey-patches built-in print function

print("Regular text gets colors")

Complete API Reference

Core Functions

gleam.setup(env='dev')

Initialize Gleam by monkey-patching the built-in print function.

Parameters:

• env (str): Environment mode - 'dev' or 'prod'. Default: 'dev'

Example:

import gleam

gleam.setup('dev')   # Development mode - all prints visible
gleam.setup('prod')  # Production mode - prints hidden unless force_print=True

---

gleam.print(*args, **kwargs) or from gleam import print

Enhanced print function with automatic beautification.

Parameters:

• *args: Any objects to print
• force_print (bool): Force printing in production mode. Default: False
• **kwargs: All standard print() keyword arguments (sep, end, file, flush)

Example:

from gleam import print
import gleam

gleam.setup()

print("Simple text")
print("Multiple", "arguments", "work")
print("Hidden in prod")
print("Visible in prod", force_print=True)

---

gleam.print_json(obj, **kwargs)

Print JSON objects with clean, colored formatting.

Parameters:

• obj: Dictionary, list, or JSON string to format
• force_print (bool): Force printing in production mode
• **kwargs: Standard print() keyword arguments

Example:

import gleam

gleam.setup()

data = {"name": "John", "age": 30, "active": True}
gleam.print_json(data)

---

gleam.json_viewer(obj, **kwargs)

Interactive JSON viewer with collapsible sections (requires terminal support).

Parameters:

• obj: Dictionary, list, or JSON string to view
• **kwargs: Standard print() keyword arguments

Controls:

• ↑/↓: Navigate up/down
• Enter/Space: Toggle collapse/expand sections
• q: Quit viewer

Example:

import gleam

gleam.setup()

data = {
    "users": [
        {"name": "John", "age": 30},
        {"name": "Jane", "age": 25}
    ]
}

gleam.json_viewer(data)  # Opens interactive mode

---

gleam.configure(**kwargs)

Update Gleam configuration settings.

Parameters:

• use_colors (bool): Enable/disable color output
• text_color (str): ANSI color code for regular text
• environment (str): Set environment mode ('dev' or 'prod')

Example:

import gleam

gleam.setup()

gleam.configure(
    use_colors=True,
    text_color='\033[95m'  # Bright magenta
)

print("This text will be bright magenta")

---

gleam.print_with_timestamp(*args, **kwargs)

Print with automatic timestamp prefix.

Example:

import gleam

gleam.setup()
gleam.print_with_timestamp("Application started")
# Output: [2024-01-01 12:30:45] Application started

---

gleam.print_separator(char='=', length=80, color=Colors.BRIGHT_BLACK)

Print a separator line for visual grouping.

Parameters:

• char (str): Character to use for separator. Default: '='
• length (int): Length of separator line. Default: 80
• color (str): ANSI color code. Default: Colors.BRIGHT_BLACK

Example:

import gleam

gleam.setup()
gleam.print_separator()
print("Section content")
gleam.print_separator('-', 60)

---

gleam.print_labeled(label, *args, **kwargs)

Print with a colored label prefix.

Parameters:

• label (str): Label text to display in brackets
• *args: Content to print after the label
• **kwargs: Standard print() keyword arguments

Example:

import gleam

gleam.setup()
gleam.print_labeled("INFO", "Server started on port 8000")
gleam.print_labeled("DEBUG", "Connection established")
# Output: [INFO] Server started on port 8000

---

gleam.print_table(data, headers=None, **kwargs)

Print a list of dictionaries as a formatted table.

Parameters:

• data (List[Dict]): List of dictionaries to display as table
• headers (List[str], optional): Column headers (auto-detected from first dict if not provided)
• **kwargs: Standard print() keyword arguments

Example:

import gleam

gleam.setup()

users = [
    {"name": "John", "age": 30, "city": "NYC"},
    {"name": "Jane", "age": 25, "city": "LA"},
    {"name": "Bob", "age": 35, "city": "SF"}
]

gleam.print_table(users)
# Output:
# name | age | city
# -----+-----+-----
# John | 30  | NYC
# Jane | 25  | LA
# Bob  | 35  | SF

---

gleam.format_table(data, headers=None)

Format a list of dictionaries as a table string (without printing).

Parameters:

• data (List[Dict]): List of dictionaries to format
• headers (List[str], optional): Column headers

Returns: Formatted table string

---

gleam.print_diff(label, before, after)

Print a before/after comparison with color coding.

Parameters:

• label (str): Label for the comparison
• before (Any): Before value (shown in red)
• after (Any): After value (shown in green)

Example:

import gleam

gleam.setup()
gleam.print_diff("Configuration", "debug=False", "debug=True")
# Output:
# [Configuration]
#   Before: debug=False  (in red)
#   After:  debug=True   (in green)

---

gleam.print_success(message, **kwargs)

Print a success message with checkmark icon in green.

Example:

import gleam

gleam.setup()
gleam.print_success("Database connection established")
# Output: ✓ Database connection established (in green)

---

gleam.print_error(message, **kwargs)

Print an error message with X icon in red.

Example:

import gleam

gleam.setup()
gleam.print_error("Failed to connect to database")
# Output: ✗ Failed to connect to database (in red)

---

gleam.print_warning(message, **kwargs)

Print a warning message with warning icon in yellow.

Example:

import gleam

gleam.setup()
gleam.print_warning("Deprecated API usage detected")
# Output: ⚠ Deprecated API usage detected (in yellow)

---

gleam.print_info(message, **kwargs)

Print an info message with info icon in blue.

Example:

import gleam

gleam.setup()
gleam.print_info("Loading configuration from file")
# Output: ℹ Loading configuration from file (in blue)

---

Configuration Class

gleam.src.config.get_config()

Get the singleton configuration instance.

Returns: Config object

Example:

import gleam
from gleam.src.config import get_config

gleam.setup()
config = get_config()

---

config.enable_file_logging(file_path, log_only=False)

Enable logging print statements to a file.

Parameters:

• file_path (str): Path to the log file (directory created automatically)
• log_only (bool): If True, only log to file (no terminal output). Default: False

Example:

import gleam
from gleam.src.config import get_config

gleam.setup()
config = get_config()

# Log to both terminal and file
config.enable_file_logging('debug.log')
print("This goes to both terminal and file")

# Log ONLY to file (silent terminal)
config.enable_file_logging('debug.log', log_only=True)
print("This only goes to file")

Log Format:

[2024-01-01 12:30:45] script.py:10 - Your message here

---

config.disable_file_logging()

Disable file logging.

Example:

from gleam.src.config import get_config

config = get_config()
config.disable_file_logging()

---

config.update(**kwargs)

Update configuration options.

Parameters:

• environment (str): 'dev' or 'prod'
• use_colors (bool): Enable/disable colors
• text_color (str): ANSI color code
• log_to_file (bool): Enable/disable file logging
• log_file_path (str): Path to log file
• log_only_mode (bool): Log only to file
• json_indent (int): JSON indentation spaces
• json_max_depth (int): Maximum JSON nesting depth

Example:

from gleam.src.config import get_config

config = get_config()
config.update(
    environment='prod',
    use_colors=True,
    json_indent=4
)

---

Automatic Formatting Examples

JSON Objects & Dictionaries

from gleam import print
import gleam

gleam.setup()

data = {
    "name": "John Doe",      # Keys: cyan, strings: green
    "age": 30,               # Integers: blue
    "active": True,          # Booleans: bold green
    "balance": None,         # Null: gray
    "tags": ["python", "dev"] # Arrays: proper formatting
}

print(data)  # Automatically detects and formats as colored JSON

Output:

{
  "name": "John Doe",
  "age": 30,
  "active": true,
  "balance": null,
  "tags": [
    "python",
    "dev"
  ]
}

---

Arrays & Lists

from gleam import print
import gleam

gleam.setup()

items = ["apple", "banana", 42, True, None]
print(items)

Output:

[
  "apple",
  "banana",
  42,
  true,
  null
]

---

DataFrames (Pandas/Polars)

import pandas as pd
from gleam import print
import gleam

gleam.setup()

df = pd.DataFrame({
    "name": ["John", "Jane", "Bob"],
    "age": [30, 25, 35],
    "city": ["NYC", "LA", "SF"]
})

print(df)  # Automatically formats with colors

Output: Colored DataFrame with cyan headers and yellow indices.

---

Functions and Objects

from gleam import print
import gleam

gleam.setup()

def my_function():
    pass

class MyClass:
    pass

obj = MyClass()

print(my_function)  # <function: my_function> (bold magenta)
print(obj)          # <MyClass object> (bold magenta)

---

Regular Text

from gleam import print
import gleam

gleam.setup()

print("This is beautiful colored text")  # Bright cyan by default
print("Multiple", "arguments", "supported")

---

JSON Strings (Auto-Parsed)

from gleam import print
import gleam

gleam.setup()

# JSON strings are automatically detected, parsed, and formatted
json_string = '{"name": "John", "age": 30, "active": true}'
print(json_string)  # Automatically formats as colored JSON

# Works with arrays too
array_string = '["apple", "banana", 42, true, null]'
print(array_string)

Output:

{
  "name": "John",
  "age": 30,
  "active": true
}

---

Configuration

Environment Setup

import gleam

# Development mode (default) - all prints visible
gleam.setup()
# or explicitly:
gleam.setup('dev')

# Production mode - prints hidden unless force_print=True
gleam.setup('prod')

print("Hidden in prod")
print("Visible in prod", force_print=True)

Environment Variable:

export GLEAM_ENV=prod  # Set environment via env variable

---

Color Customization

import gleam

gleam.setup()

# Customize colors for regular text
gleam.configure(
    use_colors=True,
    text_color='\033[95m'  # Bright magenta
)

print("This text will be bright magenta")

# Disable colors entirely
gleam.configure(use_colors=False)
print("No colors applied")

---

File Logging

import gleam
from gleam.src.config import get_config

gleam.setup()
config = get_config()

# Log to file alongside terminal output
config.enable_file_logging('debug.log')
print("This goes to both terminal and file")

# Log ONLY to file (silent terminal)
config.enable_file_logging('debug.log', log_only=True)
print("This only goes to file")

# Disable file logging
config.disable_file_logging()

Log entries include:

• Timestamp
• Filename and line number
• Message content

Example log entry:

[2024-01-01 12:30:45] main.py:42 - Application started

---

Utility Functions Examples

Timestamps

import gleam

gleam.setup()
gleam.print_with_timestamp("Server started")
gleam.print_with_timestamp("Processing request")

---

Visual Separators

import gleam

gleam.setup()

print("Section 1")
gleam.print_separator()

print("Section 2")
gleam.print_separator('-', 60)

print("Section 3")
gleam.print_separator('*', 40)

---

Labeled Output

import gleam

gleam.setup()

gleam.print_labeled("INFO", "Application initialized")
gleam.print_labeled("DEBUG", "Loading configuration")
gleam.print_labeled("WARN", "Cache miss")

---

Tables

import gleam

gleam.setup()

data = [
    {"id": 1, "name": "Alice", "score": 95},
    {"id": 2, "name": "Bob", "score": 87},
    {"id": 3, "name": "Charlie", "score": 92}
]

gleam.print_table(data)

# Custom headers
gleam.print_table(data, headers=["id", "name"])

---

Before/After Comparisons

import gleam

gleam.setup()

gleam.print_diff("Port", 8000, 8080)
gleam.print_diff("Debug Mode", False, True)
gleam.print_diff("API Version", "v1", "v2")

---

Status Messages

import gleam

gleam.setup()

gleam.print_info("Starting deployment...")
gleam.print_success("Deployment completed successfully")
gleam.print_warning("Some tests were skipped")
gleam.print_error("Failed to connect to remote server")

---

Color Scheme

Element	Color	ANSI Code
Regular Text	Bright Cyan	\033[96m
Integers/Floats	Blue	\033[34m
Strings	Green	\033[32m
Booleans	Bold Green	\033[1;32m
Null/None	Gray	\033[90m
JSON Keys	Cyan	\033[36m
Brackets	White	\033[37m
Functions/Objects	Bold Magenta	\033[1;35m

---

Configuration Options

Option	Type	Default	Description
environment	str	'dev'	Environment mode ('dev' or 'prod')
use_colors	bool	True	Enable/disable color output
text_color	str	'\033[96m'	ANSI color code for regular text
log_to_file	bool	False	Enable file logging
log_file_path	str	None	Path to log file
log_only_mode	bool	False	Log only to file, not terminal
json_indent	int	2	JSON indentation spaces
json_max_depth	int	10	Maximum JSON nesting depth for viewer

---

Complete Usage Example

from gleam import print
import gleam
from gleam.src.config import get_config

# 1. Setup environment
gleam.setup('dev')  # or gleam.setup('prod')

# 2. Enable file logging
config = get_config()
config.enable_file_logging('app.log')

# 3. Regular prints get colors
print("Starting application...")

# 4. JSON/dict objects get formatted automatically
config_data = {
    "database": {
        "host": "localhost",
        "port": 5432,
        "ssl": True
    },
    "features": ["auth", "logging"],
    "debug": False
}
print(config_data)

# 5. Arrays get formatted automatically
items = ["apple", "banana", 42, True, None]
print(items)

# 6. DataFrames (if using pandas)
import pandas as pd
df = pd.DataFrame({
    "name": ["John", "Jane"],
    "age": [30, 25]
})
print(df)  # Shows colored table

# 7. Functions and objects
def my_func():
    pass

print(my_func)  # <function: my_func>

# 8. Force print in production
gleam.setup('prod')
print("Hidden")
print("Visible", force_print=True)

# 9. Interactive JSON viewer
large_data = {
    "users": [
        {"id": 1, "name": "John", "profile": {"age": 30}},
        {"id": 2, "name": "Jane", "profile": {"age": 25}}
    ]
}
gleam.json_viewer(large_data)  # Interactive navigation

# 10. Customize colors
gleam.configure(text_color='\033[95m')
print("Custom colored text")

# 11. Silent file logging
config.enable_file_logging('silent.log', log_only=True)
print("Only in file, not terminal")

print("Application ready!")

---

Error Handling

Gleam preserves error messages, warnings, and tracebacks without modification:

import gleam

gleam.setup()

# These remain uncolored and unmodified:
try:
    1/0
except Exception as e:
    print(f"Error: {e}")          # Normal error output
    print("Warning: Check input")  # Normal warning output
    print("Traceback info...")     # Normal traceback

Error Detection: Gleam automatically detects error-related keywords and skips beautification:

• error:
• exception:
• traceback
• warning:
• file "
• Python exception types (SyntaxError, TypeError, etc.)

---

Advanced Features

Smart User Code Detection

Gleam only beautifies prints from user code, not system/library code. It automatically skips:

• Built-in modules
• Site-packages
• Internal Gleam package files
• Importlib and bootstrap modules

This ensures library debug output remains unchanged.

---

Terminal Detection

Gleam automatically detects if output is going to a terminal:

• TTY (terminal): Full colors and formatting applied
• Non-TTY (pipes, files): Plain text output without ANSI codes

---

DataFrame Support

Gleam automatically detects and formats:

• Pandas DataFrames
• Polars DataFrames

No additional configuration needed!

---

Import Patterns

Pattern 1: Replace built-in print

from gleam import print
import gleam

gleam.setup()
print("Enhanced!")

Pattern 2: Use gleam namespace

import gleam

gleam.setup()
print("Enhanced!")  # Built-in print is monkey-patched

Pattern 3: Explicit function calls

import gleam

gleam.setup()
gleam.print("Using gleam.print directly")
gleam.print_json({"key": "value"})
gleam.json_viewer({"data": [1, 2, 3]})

---

Environment Variables

• GLEAM_ENV: Set to 'prod' or 'dev' (default: 'dev')

export GLEAM_ENV=prod
python your_script.py

---

Package Structure

gleam/
├── __init__.py           # Main exports: setup(), print, print_json, json_viewer, configure
├── _version.py           # Version information
├── example.py            # Usage examples
└── src/
    ├── __init__.py
    ├── beautify.py       # Core beautification logic
    ├── config.py         # Configuration management
    └── json_viewer.py    # JSON formatting and interactive viewer

---

Tips & Best Practices

1. Call setup() early: Initialize Gleam at the start of your script
2. Use force_print sparingly: Only for critical production logs
3. File logging for debugging: Enable file logging during development
4. Silent logging for production: Use log_only=True in production
5. Interactive viewer for complex data: Use json_viewer() for nested structures
6. Disable in CI/CD: Set GLEAM_ENV=prod or disable colors for CI pipelines

---

Performance

• Zero dependencies: No external packages required
• Minimal overhead: Only processes user code prints
• Smart detection: Automatic format detection without manual configuration
• Lazy formatting: Only formats when needed

---

License

MIT License

---

Contributing

Contributions welcome! This is an ultra-lightweight alternative to rich.

---

Gleam vs Rich

Feature	Gleam	Rich
Dependencies	0	Multiple
Setup	One line	More configuration
Auto-detection	✅	❌
File logging	✅	Limited
Environment modes	✅	❌
Weight	Ultra-light	Heavier

---

Made with care for beautiful terminal output