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https://github.com/yusugomori/barbar

Progress bar for deep learning training iterations💈
https://github.com/yusugomori/barbar

deep-learning keras pytorch

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Progress bar for deep learning training iterations💈

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# Barbar💈
Progress bar for deep learning training iterations.

![screenshot](https://user-images.githubusercontent.com/770299/55931402-3bb76000-5c60-11e9-9686-f6ae23adcaf0.png)

## Quick glance

```python
from barbar import Bar
import torch
from torch.utils.data import DataLoader
from torchvision import datasets

mnist_train = datasets.MNIST(root=root,
download=True,
train=True)
train_dataloader = DataLoader(mnist_train,
batch_size=100,
shuffle=True)

model = MLP().to(device)

for epoch in range(epochs):
print('Epoch: {}'.format(epoch+1))

for idx, (x, t) in enumerate(Bar(train_dataloader)):
x, t = x.to(device), t.to(device)
loss, preds = train_step(x, t)
```

```
Epoch: 1
60000/60000: [===============================>] - ETA 0.0s
Epoch: 2
28100/60000: [==============>.................] - ETA 4.1s
```

Barbar works best with PyTorch DataLoader, but it also works with custom DataLoader. Minimal DataLoader example can be written as follows:

```python
class CustomDataLoader(object):
def __init__(self, dataset,
batch_size=100,
shuffle=False,
random_state=None):
self.dataset = list(zip(dataset[0], dataset[1]))
self.batch_size = batch_size
self.shuffle = shuffle
if random_state is None:
random_state = np.random.RandomState(1234)
self.random_state = random_state
self._idx = 0
self._reset()

def __len__(self):
N = len(self.dataset)
b = self.batch_size
return N // b + bool(N % b)

def __iter__(self):
return self

def __next__(self):
if self._idx >= len(self.dataset):
self._reset()
raise StopIteration()

x, y = \
zip(*self.dataset[self._idx:(self._idx + self.batch_size)])

# x = torch.Tensor(x)
# y = torch.LongTensor(y)

self._idx += self.batch_size

return x, y

def _reset(self):
if self.shuffle:
self.dataset = shuffle(self.dataset,
random_state=self.random_state)
self._idx = 0

mnist = datasets.fetch_openml('mnist_784', version=1,)
x, y = mnist.data.astype(np.float32), mnist.target.astype(np.int32)
x = x / 255.
x_train = x[:60000]
y_train = y[:60000]

train_dataloader = CustomDataLoader((x_train, y_train),
batch_size=100,
shuffle=True)
```

## Installation

- **Install Barbar from PyPI (recommended):**

```sh
pip install barbar
```

- **Alternatively: install Barbar from the GitHub source:**

First, clone Barbar using `git`:

```sh
git clone https://github.com/yusugomori/barbar.git
```

Then, `cd` to the Barbar folder and run the install command:
```sh
cd barbar
sudo python setup.py install
```