# Loading Progress Bar

### Example 1:

```
import time
import sys

toolbar_width = 40

# setup toolbar
sys.stdout.write("[%s]" % (" " * toolbar_width))
sys.stdout.flush()
sys.stdout.write("\b" * (toolbar_width+1)) # return to start of line, after '['

for i in xrange(toolbar_width):
    time.sleep(0.1) # do real work here
    # update the bar
    sys.stdout.write("-")
    sys.stdout.flush()

sys.stdout.write("]\n") # this ends the progress bar

```

### Example 2:

The code below can be adapted to fit your needs by customizing: bar progress symbol `'#'`, bar `size`, text `prefix` etc.

```
import sys

def progressbar(it, prefix="", size=60, file=sys.stdout):
    count = len(it)
    def show(j):
        x = int(size*j/count)
        file.write("%s[%s%s] %i/%i\r" % (prefix, "#"*x, "."*(size-x), j, count))
        file.flush()        
    show(0)
    for i, item in enumerate(it):
        yield item
        show(i+1)
    file.write("\n")
    file.flush()
```

**Usage:**

```
import time

for i in progressbar(range(15), "Computing: ", 40):
    time.sleep(0.1) # any calculation you need
```

**Output:**

```
Computing: [################........................] 4/15
```

### Example 3:

Try progress from <https://pypi.python.org/pypi/progress>.

```
from progress.bar import Bar

bar = Bar('Processing', max=20)
for i in range(20):
    # Do some work
    bar.next()
bar.finish()
```

**The result will be a bar like the following:**

```
Processing |#############                   | 42/100
```

### Example 3:

Try PyProg. PyProg is an open-source library for Python to create super customizable progress indicators & bars.It is currently at version 1.0.2; it is hosted on Github and available on PyPI (Links down below). It is compatible with Python 3 & 2 and it can also be used with Qt Console.

**It is really easy to use. The following code:**

```
import pyprog
from time import sleep

# Create Object
prog = pyprog.ProgressBar(" ", "", 34)
# Update Progress Bar
prog.update()

for i in range(34):
    # Do something
    sleep(0.1)
    # Set current status
    prog.set_stat(i + 1)
    # Update Progress Bar again
    prog.update()

# Make the Progress Bar final
prog.end()
```

**Output:**

```
Initial State:
Progress: 0% --------------------------------------------------

When half done:
Progress: 50% #########################-------------------------

Final State:
Progress: 100% ##################################################
```

You can easily install it with: `pip install pyprog`.

PyProg Github: <https://github.com/Bill13579/pyprog>\
PyPI: <https://pypi.python.org/pypi/pyprog/>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://wiki.smhuda.com/programming/python/loading-progress-bar.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.