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import os
import torch
from torch.autograd import Variable
USE_CUDA = torch.cuda.is_available()
def prRed(prt): print("\033[91m {}\033[00m" .format(prt))
def prGreen(prt): print("\033[92m {}\033[00m" .format(prt))
def prYellow(prt): print("\033[93m {}\033[00m" .format(prt))
def prLightPurple(prt): print("\033[94m {}\033[00m" .format(prt))
def prPurple(prt): print("\033[95m {}\033[00m" .format(prt))
def prCyan(prt): print("\033[96m {}\033[00m" .format(prt))
def prLightGray(prt): print("\033[97m {}\033[00m" .format(prt))
def prBlack(prt): print("\033[98m {}\033[00m" .format(prt))
def to_numpy(var):
return var.cpu().data.numpy() if USE_CUDA else var.data.numpy()
def to_tensor(ndarray, device):
return torch.tensor(ndarray, dtype=torch.float, device=device)
def soft_update(target, source, tau):
for target_param, param in zip(target.parameters(), source.parameters()):
target_param.data.copy_(
target_param.data * (1.0 - tau) + param.data * tau
)
def hard_update(target, source):
for m1, m2 in zip(target.modules(), source.modules()):
m1._buffers = m2._buffers.copy()
for target_param, param in zip(target.parameters(), source.parameters()):
target_param.data.copy_(param.data)
def get_output_folder(parent_dir, env_name):
"""Return save folder.
Assumes folders in the parent_dir have suffix -run{run
number}. Finds the highest run number and sets the output folder
to that number + 1. This is just convenient so that if you run the
same script multiple times tensorboard can plot all of the results
on the same plots with different names.
Parameters
----------
parent_dir: str
Path of the directory containing all experiment runs.
Returns
-------
parent_dir/run_dir
Path to this run's save directory.
"""
os.makedirs(parent_dir, exist_ok=True)
experiment_id = 0
for folder_name in os.listdir(parent_dir):
if not os.path.isdir(os.path.join(parent_dir, folder_name)):
continue
try:
folder_name = int(folder_name.split('-run')[-1])
if folder_name > experiment_id:
experiment_id = folder_name
except:
pass
experiment_id += 1
parent_dir = os.path.join(parent_dir, env_name)
parent_dir = parent_dir + '-run{}'.format(experiment_id)
os.makedirs(parent_dir, exist_ok=True)
return parent_dir
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