reprint

0.6.0 verified Fri May 01 auth: no python maintenance

A simple module for Python 2/3 to print and refresh multi-line output contents in terminal. Version 0.6.0 is the latest, currently in maintenance mode.

pip install reprint

Common errors

error AttributeError: module 'reprint' has no attribute 'output' ↓

cause Incorrect import: using 'import reprint' then calling 'reprint.output'

fix

Correct import: from reprint import output

error IndexError: list assignment index out of range ↓

cause Trying to update an index that exceeds the number of lines defined by 'initial_len'

fix

Set 'initial_len' to the number of lines you will modify, or modify only existing indices.

error ValueError: I/O operation on closed file. ↓

cause Attempting to modify output_lines after the 'with' block has exited

fix

Ensure all modifications to output_lines are made within the 'with' block.

Warnings

gotcha The 'output' context manager must be used with a 'with' statement. Assigning to output_lines indices without the proper context will cause undefined behavior or errors. ↓

fix Always use 'with output(initial_len=..., interval=...) as output_lines:' and modify output_lines within the block.

gotcha The 'initial_len' parameter is optional but if not set, the output may not have enough lines. Attempting to access an index beyond the current number of lines will raise an IndexError. ↓

fix Set 'initial_len' to the maximum number of lines you intend to update, or ensure you only update indices within range.

deprecated Python 2 support is not actively maintained. The library may work but is not guaranteed to receive bug fixes for Python 2. ↓

fix Use Python 3 for best compatibility.

gotcha The 'interval' parameter controls refresh rate. Setting it too low (e.g., 0) may cause high CPU usage or terminal flickering. ↓

fix Use a reasonable interval (>= 0.05) to avoid performance issues.

Imports

reprint
```
from reprint import output
```
The main class is 'output' from the reprint module. No common wrong import pattern.
output
```
from reprint import output
```
Direct import of the output function/class.

Quickstart

Creates a dynamic multi-line output that refreshes in place. The 'initial_len' sets the number of lines; assign to list indices to update.

import time
from reprint import output

with output(initial_len=3, interval=0.1) as output_lines:
    for i in range(10):
        output_lines[0] = f"Line 1: {i}"
        output_lines[1] = f"Line 2: {i*2}"
        output_lines[2] = f"Line 3: {i*3}"
        time.sleep(0.5)