TwT-6's picture
Upload 2667 files
256a159 verified
raw
history blame contribute delete
No virus
28.6 kB
# flake8: noqa
# yapf: disable
import functools
import getpass
import math
import os
import os.path as osp
from datetime import datetime
from typing import Any, Dict, List, Optional
import matplotlib.pyplot as plt
import mmengine
import numpy as np
import pandas as pd
import seaborn as sns
import tabulate
from matplotlib.colors import LinearSegmentedColormap
from mmengine import ConfigDict
from tqdm import tqdm
from opencompass.summarizers.default import (
METRIC_BLACKLIST, METRIC_WHITELIST, DefaultSummarizer,
model_abbr_from_cfg_used_in_summarizer)
from opencompass.utils import (LarkReporter, dataset_abbr_from_cfg,
get_infer_output_path, get_logger,
model_abbr_from_cfg)
from opencompass.utils.prompt import get_prompt_hash
def read_after_specific_line_except_last(file_name, keyword, offset):
with open(file_name, 'r', encoding='utf-8') as file:
lines = file.readlines()
for index, line in enumerate(lines):
if keyword in line:
start_index = index + offset + 1
break
else:
return ''
return ''.join(lines[start_index:-1])
def create_model_dataframe(nested_dict, model_name, dataset_abbr, parallel=False):
if model_name not in nested_dict:
print(f'Model {model_name} not found in the provided data.')
return pd.DataFrame()
model_data = nested_dict[model_name]
data = []
for key, value in model_data.items():
if parallel:
if dataset_abbr in key:
new_key_base = key.replace(dataset_abbr, '').strip('_')
for depth_key, score in value.items():
new_key = f'{new_key_base}{depth_key}'
if 'average_score' not in new_key:
data.append([new_key, score])
else:
if dataset_abbr in key:
score = value.get('score', None)
new_key = key.replace(dataset_abbr, '').strip('_')
data.append([new_key, score])
df = pd.DataFrame(data, columns=['dataset', model_name])
return df
def parse_model_scores(text):
lines = text.split('\n')
result_dict = {}
current_model = None
for line in lines:
if line.startswith('Model:'):
current_model = line.split('Model:')[1].strip()
result_dict[current_model] = {}
elif current_model and ':' in line:
dataset, score_str = line.split(':', 1)
score_dict = eval(score_str.strip())
result_dict[current_model][dataset] = score_dict
return result_dict
def visualize(df_raw, save_path: str,model_name: str ,dataset_type:str):
df = df_raw.copy()
df['Context Length'] = df['dataset'].apply(
lambda x: int(x.split('Length')[1].split('Depth')[0]))
df['Document Depth'] = df['dataset'].apply(
lambda x: float(x.split('Depth')[1].split('_')[0]))
model_columns = [
col for col in df.columns
if col not in ['Context Length', 'Document Depth']
]
for model_name in model_columns[1:]:
model_df = df[['Document Depth', 'Context Length',
model_name]].copy()
model_df.rename(columns={model_name: 'Score'}, inplace=True)
# Create pivot table
pivot_table = pd.pivot_table(model_df,
values='Score',
index=['Document Depth'],
columns=['Context Length'],
aggfunc='mean')
# Calculate mean scores
mean_scores = pivot_table.mean().values
# Calculate overall score
overall_score = mean_scores.mean()
# Create heatmap and line plot
plt.figure(figsize=(15.5, 8))
ax = plt.gca()
cmap = LinearSegmentedColormap.from_list(
'custom_cmap', ['#F0496E', '#EBB839', '#0CD79F'])
# Draw heatmap
sns.heatmap(pivot_table,
cmap=cmap,
ax=ax,
cbar_kws={'label': 'Score'},
vmin=0,
vmax=100)
# Set line plot data
x_data = [i + 0.5 for i in range(len(mean_scores))]
y_data = mean_scores
# Create twin axis for line plot
ax2 = ax.twinx()
# Draw line plot
ax2.plot(x_data,
y_data,
color='white',
marker='o',
linestyle='-',
linewidth=2,
markersize=8,
label='Average Depth Score')
# Set y-axis range
ax2.set_ylim(0, 100)
# Hide original y-axis ticks and labels
ax2.set_yticklabels([])
ax2.set_yticks([])
# Add legend
ax2.legend(loc='upper left')
# Set chart title and labels
ax.set_title(f'{model_name} {dataset_type} Context '
'Performance\nFact Retrieval Across '
'Context Lengths ("Needle In A Haystack")')
ax.set_xlabel('Token Limit')
ax.set_ylabel('Depth Percent')
ax.set_xticklabels(pivot_table.columns.values, rotation=45)
ax.set_yticklabels(pivot_table.index.values, rotation=0)
# Add overall score as a subtitle
plt.text(0.5,
-0.13, f'Overall Score for {model_name}: '
f'{overall_score:.2f}',
ha='center',
va='center',
transform=ax.transAxes,
fontsize=13)
plt.tight_layout()
plt.subplots_adjust(right=1)
plt.draw()
plt.savefig(save_path)
print(f'Saved :{save_path}')
plt.close() # Close figure to prevent memory leaks
return overall_score
def save_results_to_plots(txt_results_save_path):
content = read_after_specific_line_except_last(txt_results_save_path, 'raw format', 2)
parsed_data = parse_model_scores(content)
model_names = get_dict_model_names(parsed_data)
numbers = [2, 3, 4, 5]
languages = ['en', 'zh']
size_exists = []
sizes_origin = ['_4k', '_8k', '_32k', '_128k', '_200k']
for size in sizes_origin:
if size in content:
size_exists.append(size)
multi_dataset_abbrs = [f'{num}needle_{lang}{size}' for num in numbers for lang in languages for size in size_exists]
origin_dataset_abbrs = [f'origin_{lang}{size}' for lang in languages for size in size_exists]
parallel_dataset_abbrs = [f'parallel_{lang}{size}' for lang in languages for size in size_exists]
dataset_abbrs = multi_dataset_abbrs + origin_dataset_abbrs + \
parallel_dataset_abbrs
base_path = os.path.dirname(txt_results_save_path)
plot_path = os.path.join(base_path, 'plots')
model_scores = {}
for model_name in tqdm(model_names):
model_datasets_scores = {} # Dictionary to store scores for each dataset for the current model
for dataset_abbr in dataset_abbrs:
parallel_flag = 'parallel' in dataset_abbr
# Create a directory for each dataset_abbr
folder_path = os.path.join(plot_path, dataset_abbr)
ensure_directory(folder_path)
# Construct the full path to save the image
save_path = os.path.join(folder_path, f'{model_name}.png')
# Create DataFrame for the model and dataset
df = create_model_dataframe(parsed_data, model_name, dataset_abbr, parallel=parallel_flag)
# Generate visualization and get the score
score = visualize(df, save_path, model_name, dataset_abbr)
# Store the score in the dictionary
model_datasets_scores[dataset_abbr] = '{:.02f}'.format(score)
# Process and visualize the overall score
overall_score_pic_path = os.path.join(plot_path, f'{model_name}_overall.png')
merged_df = merge_dataframes(model_name, dataset_abbrs, parsed_data)
print(merge_dataframes)
averaged_df = calculate_elementwise_average(merged_df)
# Assume visualize returns the average score for the overall visualization
overall_score = visualize(averaged_df, overall_score_pic_path, 'weighted_average_score', 'Overall Score')
# Add the overall score to the dictionary
model_datasets_scores['Overall'] = '{:.02f}'.format(overall_score)
# Add the model's scores to the main dictionary
model_scores[model_name] = model_datasets_scores
def ensure_directory(path):
if not os.path.exists(path):
os.makedirs(path)
def get_dict_model_names(nested_dict):
model_names = []
for first_level_key in nested_dict:
model_names.append(first_level_key)
return model_names
def merge_dataframes(model_name, dataset_abbrs, parsed_data):
dfs = []
for dataset_abbr in dataset_abbrs:
parallel_flag = 'parallel' in dataset_abbr
df = create_model_dataframe(parsed_data, model_name, dataset_abbr, parallel=parallel_flag)
if not df.empty and len(df.columns) > 1:
score_column = df.columns[-1]
df.rename(columns={score_column: dataset_abbr}, inplace=True)
dfs.append(df)
from functools import reduce
merged_df = reduce(lambda left, right: pd.merge(left, right, on='dataset', how='outer'), dfs)
if merged_df.isnull().any().any():
print('Warning: Some rows were filtered out due to NaN values. This is often due to mismatched row counts among DataFrames.')
merged_df = merged_df.dropna()
return merged_df
def calculate_elementwise_average(merged_df):
score_columns = [col for col in merged_df.columns if col != 'dataset']
origin_columns = [col for col in score_columns if 'origin' in col]
parallel_columns = [col for col in score_columns if 'parallel' in col]
multi_columns = [col for col in score_columns if 'needle' in col]
if origin_columns and parallel_columns and multi_columns:
origin_avg = merged_df[origin_columns].mean(axis=1) * 0.4
parallel_avg = merged_df[parallel_columns].mean(axis=1) * 0.3
multi_avg = merged_df[multi_columns].mean(axis=1) * 0.3
merged_df['weighted_average_score'] = origin_avg + parallel_avg + multi_avg
else:
merged_df['weighted_average_score'] = pd.Series([0] * len(merged_df))
return merged_df.iloc[:, [0, -1]]
class NeedleBenchSummarizer(DefaultSummarizer):
"""NeedleBench summarizer in OpenCompass.
Args:
config (ConfigDict): The configuration object of the evaluation task. It's expected to be filled out at runtime.
dataset_abbrs (list[str], optional): Dataset abbreviations to be listed in the summary.
summary_groups (list): The dataset groups whose results need to be averaged out. For example, mmlu. Each item it a dict with
'name' (str) and 'subsets' (list of dataset abbrs), and optionally
'weights' if weighted average is needed.
prompt_db: A deprecated field.
"""
def _format_table(self, parsed_results, dataset_metrics, dataset_eval_mode):
dataset_abbrs = [dataset_abbr_from_cfg(dataset) for dataset in self.dataset_cfgs]
prompt_version = {dataset_abbr_from_cfg(d): get_prompt_hash(d)[:6] for d in self.dataset_cfgs}
summarizer_dataset_abbrs = []
if self.dataset_abbrs is None:
# display all dataset metrics included in the config
for dataset_abbr in dataset_abbrs:
if dataset_abbr in dataset_metrics:
for metric in dataset_metrics[dataset_abbr]:
summarizer_dataset_abbrs.append((dataset_abbr, metric))
else:
summarizer_dataset_abbrs.append((dataset_abbr, None))
# along with all possible group metrics
for dataset_abbr in dataset_metrics:
for metric in dataset_metrics[dataset_abbr]:
if (dataset_abbr, metric) not in summarizer_dataset_abbrs:
summarizer_dataset_abbrs.append((dataset_abbr, metric))
else:
# follow the required order
for item in self.dataset_abbrs:
if isinstance(item, str):
summarizer_dataset_abbrs.append((item, None))
elif isinstance(item, (list, tuple)):
summarizer_dataset_abbrs.append((item[0], item[1]))
table = []
header = ['dataset', 'version', 'metric', 'mode'] + self.model_abbrs
table.append(header)
for key in dataset_metrics:
dataset_metrics[key] = list(set(dataset_metrics[key]))
for dataset_abbr, metric in summarizer_dataset_abbrs:
if dataset_abbr not in dataset_metrics:
table.append([dataset_abbr, '-', '-', '-'] + ['-'] * len(self.model_abbrs))
table.append(header)
continue
if len(dataset_metrics[dataset_abbr]) >= 10:
metric = 'average_score'
if metric is None:
metric = dataset_metrics[dataset_abbr][0]
elif metric in dataset_metrics[dataset_abbr]:
pass
else:
table.append([dataset_abbr, '-', '-', '-'] + ['-'] * len(self.model_abbrs))
continue
row = [dataset_abbr, prompt_version.get(dataset_abbr, '-'), metric, dataset_eval_mode.get(dataset_abbr, '-')]
for model_abbr in self.model_abbrs:
if dataset_abbr in parsed_results[model_abbr]:
row.append('{:.02f}'.format(parsed_results[model_abbr][dataset_abbr][metric]))
else:
row.append('-')
table.append(row)
for i in range(len(table)):
if i == 0 or table[i][0].startswith('---------'):
table[i] = [table[i][0]] + table[i][4:]
else:
table[i] = [table[i][0]] + table[i][4:]
return table
def _format_raw_txt(self, raw_results):
raw_dataset_abbrs = []
for model_abbr in self.model_abbrs:
for dataset_abbr in raw_results[model_abbr]:
if dataset_abbr not in raw_dataset_abbrs:
raw_dataset_abbrs.append(dataset_abbr)
raw_txts = []
for model_abbr in self.model_abbrs:
raw_txts.append('-------------------------------')
raw_txts.append(f'Model: {model_abbr}')
for dataset_abbr in raw_dataset_abbrs:
result = raw_results[model_abbr].get(dataset_abbr, '{}')
raw_txts.append(f'{dataset_abbr}: {result}')
raw_txts = '\n'.join(raw_txts)
return raw_txts
def _read_and_sort_dataframe(self, file_path):
# Read the file without treating the first row as a header
df = pd.read_csv(file_path, header=None)
# Function to sort columns based on the value of a specific row, excluding the first column
def sort_columns_based_on_row_corrected(df, base_row_idx, start_row_idx, end_row_idx):
# Extract the rows for sorting
sort_values_row = df.iloc[base_row_idx, 1:].replace('-', np.nan).apply(pd.to_numeric, errors='coerce')
# Handle NaNs by setting them to a value less than the minimum or using a method to keep them at the end
min_possible_value = sort_values_row.min(skipna=True) - 1 # Use min value in the row minus 1 or another method
sort_values_row_filled = sort_values_row.fillna(min_possible_value)
# Get the sorted order of indices, excluding the first column
sorted_col_indices = sort_values_row_filled.sort_values(ascending=False).index
# Apply the sorted column indices to the whole DataFrame, adjusting for Python's 0-based index
df.iloc[start_row_idx:end_row_idx+1] = df.iloc[start_row_idx:end_row_idx+1, [0] + sorted_col_indices.tolist()]
# Apply the corrected sorting function based on the description
sort_columns_based_on_row_corrected(df, 1, 0, 2) # For rows 1-2 based on row 2's values
sort_columns_based_on_row_corrected(df, 4, 3, 7) # For rows 4-7 based on row 5's values
sort_columns_based_on_row_corrected(df, 9, 8, 12) # For rows 9-12 based on row 10's values
sort_columns_based_on_row_corrected(df, 14, 13, 25) # For rows 14-25 based on row 15's values
# Return the sorted DataFrame
return df
def _output_to_file(self, output_path, time_str, table, raw_txts):
# output to file
if output_path is None:
output_path = osp.join(self.work_dir, 'summary', f'summary_{time_str}.txt')
output_csv_path = osp.join(self.work_dir, 'summary', f'summary_{time_str}.csv')
else:
output_csv_path = output_path.replace('.txt', '.csv')
output_dir = osp.split(output_path)[0]
mmengine.mkdir_or_exist(output_dir)
with open(output_path, 'w', encoding='utf-8') as f:
text = f'{time_str}\n' + \
'tabulate format\n' + \
'^' * 128 + '\n' + \
tabulate.tabulate(table, headers='firstrow') + '\n' + \
'$' * 128 + '\n\n' + \
'-' * 128 + ' THIS IS A DIVIDER ' + '-' * 128 + '\n\n' + \
'csv format\n' + \
'^' * 128 + '\n' + \
'\n'.join([','.join(row) for row in table]) + '\n' + \
'$' * 128 + '\n\n' + \
'-' * 128 + ' THIS IS A DIVIDER ' + '-' * 128 + '\n\n' + \
'raw format\n' + \
'^' * 128 + '\n' + \
raw_txts + '\n' + \
'$' * 128 + '\n'
f.write(text)
self.logger.info(f'write summary to {osp.abspath(output_path)}')
with open(output_csv_path, 'w', encoding='utf-8') as f:
f.write('\n'.join([','.join(row) for row in table]) + '\n')
self.logger.info(f'write csv to {osp.abspath(output_csv_path)}')
df_sorted = self._read_and_sort_dataframe(output_csv_path)
sorted_file_path = osp.abspath(output_csv_path).split('.')[0] + '_sorted.csv'
df_sorted.to_csv(sorted_file_path, index=False, header=False)
self.logger.info(f'write sorted csv to {sorted_file_path}')
def summarize(
self,
output_path: str = None,
time_str: str = datetime.now().strftime('%Y%m%d_%H%M%S')): # noqa
# pick up results
raw_results, parsed_results, dataset_metrics, dataset_eval_mode = self._pick_up_results()
# calculate group metrics
raw_results, parsed_results, dataset_metrics, dataset_eval_mode = \
self._calculate_group_metrics(raw_results, parsed_results, dataset_metrics, dataset_eval_mode)
# format table
table = self._format_table(parsed_results, dataset_metrics, dataset_eval_mode)
# format raw txt
raw_txts = self._format_raw_txt(raw_results)
# output to screen
print(tabulate.tabulate(table, headers='firstrow'))
# output to .text / .csv files
self._output_to_file(output_path, time_str, table, raw_txts)
if self.lark_reporter:
content = f'{getpass.getuser()} 的'
content += f'详细评测汇总已输出至 {osp.abspath(output_path)}'
self.lark_reporter.post(content)
if output_path is None:
output_path = osp.join(self.work_dir, 'summary', f'summary_{time_str}.txt')
# plot to show visualize results
save_results_to_plots(output_path)
class NeedleBenchATCSummarizer(DefaultSummarizer):
"""NeedleBench-ATC summarizer in OpenCompass.
Args:
config (ConfigDict): The configuration object of the evaluation task. It's expected to be filled out at runtime.
dataset_abbrs (list[str], optional): Dataset abbreviations to be listed in the summary.
summary_groups (list): The dataset groups whose results need to be averaged out. For example, mmlu. Each item it a dict with
'name' (str) and 'subsets' (list of dataset abbrs), and optionally
'weights' if weighted average is needed.
prompt_db: A deprecated field.
"""
def _format_table(self, parsed_results, dataset_metrics, dataset_eval_mode):
dataset_abbrs = [dataset_abbr_from_cfg(dataset) for dataset in self.dataset_cfgs]
prompt_version = {dataset_abbr_from_cfg(d): get_prompt_hash(d)[:6] for d in self.dataset_cfgs}
summarizer_dataset_abbrs = []
if self.dataset_abbrs is None:
# display all dataset metrics included in the config
for dataset_abbr in dataset_abbrs:
if dataset_abbr in dataset_metrics:
for metric in dataset_metrics[dataset_abbr]:
summarizer_dataset_abbrs.append((dataset_abbr, metric))
else:
summarizer_dataset_abbrs.append((dataset_abbr, None))
# along with all possible group metrics
for dataset_abbr in dataset_metrics:
for metric in dataset_metrics[dataset_abbr]:
if (dataset_abbr, metric) not in summarizer_dataset_abbrs:
summarizer_dataset_abbrs.append((dataset_abbr, metric))
else:
# follow the required order
for item in self.dataset_abbrs:
if isinstance(item, str):
summarizer_dataset_abbrs.append((item, None))
elif isinstance(item, (list, tuple)):
summarizer_dataset_abbrs.append((item[0], item[1]))
table = []
header = ['dataset', 'version', 'metric', 'mode'] + self.model_abbrs
table.append(header)
for key in dataset_metrics:
dataset_metrics[key] = list(set(dataset_metrics[key]))
for dataset_abbr, metric in summarizer_dataset_abbrs:
if dataset_abbr not in dataset_metrics:
table.append([dataset_abbr, '-', '-', '-'] + ['-'] * len(self.model_abbrs))
table.append(header)
continue
if len(dataset_metrics[dataset_abbr]) >= 10:
metric = 'average_score'
if metric is None:
metric = dataset_metrics[dataset_abbr][0]
elif metric in dataset_metrics[dataset_abbr]:
pass
else:
table.append([dataset_abbr, '-', '-', '-'] + ['-'] * len(self.model_abbrs))
continue
row = [dataset_abbr, prompt_version.get(dataset_abbr, '-'), metric, dataset_eval_mode.get(dataset_abbr, '-')]
for model_abbr in self.model_abbrs:
if dataset_abbr in parsed_results[model_abbr]:
row.append('{:.02f}'.format(parsed_results[model_abbr][dataset_abbr][metric]))
else:
row.append('-')
table.append(row)
for i in range(len(table)):
if i == 0 or table[i][0].startswith('---------'):
table[i] = [table[i][0]] + table[i][4:]
else:
table[i] = [table[i][0]] + table[i][4:]
return table
def _read_and_sort_dataframe(self, file_path):
# Read the file without treating the first row as a header
data = pd.read_csv(file_path)
# print(data)
# Correct the extraction of needle counts for all settings
data['needle_count'] = data['dataset'].str.extract(r'needle_(\d+)_').astype(float)
data['needle_count'] = data['needle_count'].astype(int)
# Define experimental settings groups
experimental_settings = {
'en': '_en$',
'zh': '_zh$',
'en_ordered': '_en_ordered',
'zh_ordered': '_zh_ordered',
}
# Function to calculate maximum needles
def calculate_max_needles(dataset):
max_needles = {model: None for model in dataset.columns if 'b' in model}
for model in max_needles.keys():
consecutive_low_scores = 0
previous_needle_count = 0
for index, row in dataset.sort_values(by='needle_count').iterrows():
try:
score = float(row[model])
except ValueError as e:
score = -1
if score < 60:
consecutive_low_scores += 1
if consecutive_low_scores == 1:
max_needles[model] = previous_needle_count
else:
consecutive_low_scores = 0
previous_needle_count = row['needle_count']
max_needle_count_seen = dataset['needle_count'].max()
max_needles[model] = max_needle_count_seen if max_needles[model] is None else max_needles[model]
return max_needles
# Calculate max needles for each group and organize results in a DataFrame
results = {}
for setting, regex in experimental_settings.items():
filtered_data = data[data['dataset'].str.contains(regex)]
results[setting] = calculate_max_needles(filtered_data)
# Convert results to DataFrame and transpose it
results_df = pd.DataFrame(results).transpose()
# Return the sorted DataFrame
results_df.index.name = 'ATC Experiment Type'
return results_df
def _output_to_file(self, output_path, time_str, table, raw_txts):
# output to file
if output_path is None:
output_path = osp.join(self.work_dir, 'summary', f'summary_{time_str}.txt')
output_csv_path = osp.join(self.work_dir, 'summary', f'summary_{time_str}.csv')
else:
output_csv_path = output_path.replace('.txt', '.csv')
output_dir = osp.split(output_path)[0]
mmengine.mkdir_or_exist(output_dir)
with open(output_path, 'w', encoding='utf-8') as f:
text = f'{time_str}\n' + \
'tabulate format\n' + \
'^' * 128 + '\n' + \
tabulate.tabulate(table, headers='firstrow') + '\n' + \
'$' * 128 + '\n\n' + \
'-' * 128 + ' THIS IS A DIVIDER ' + '-' * 128 + '\n\n' + \
'csv format\n' + \
'^' * 128 + '\n' + \
'\n'.join([','.join(row) for row in table]) + '\n' + \
'$' * 128 + '\n\n' + \
'-' * 128 + ' THIS IS A DIVIDER ' + '-' * 128 + '\n\n' + \
'raw format\n' + \
'^' * 128 + '\n' + \
raw_txts + '\n' + \
'$' * 128 + '\n'
f.write(text)
self.logger.info(f'write summary to {osp.abspath(output_path)}')
with open(output_csv_path, 'w', encoding='utf-8') as f:
f.write('\n'.join([','.join(row) for row in table]) + '\n')
# self.logger.info(f'write csv to {osp.abspath(output_csv_path)}')
df_sorted = self._read_and_sort_dataframe(output_csv_path)
df_sorted.to_csv(output_csv_path)
self.logger.info(f'write sorted csv to {output_csv_path}')
def summarize(
self,
output_path: str = None,
time_str: str = datetime.now().strftime('%Y%m%d_%H%M%S')): # noqa
# pick up results
raw_results, parsed_results, dataset_metrics, dataset_eval_mode = self._pick_up_results()
# calculate group metrics
raw_results, parsed_results, dataset_metrics, dataset_eval_mode = \
self._calculate_group_metrics(raw_results, parsed_results, dataset_metrics, dataset_eval_mode)
# format table
table = self._format_table(parsed_results, dataset_metrics, dataset_eval_mode)
# format raw txt
raw_txts = self._format_raw_txt(raw_results)
# output to .text / .csv files
self._output_to_file(output_path, time_str, table, raw_txts)
if self.lark_reporter:
content = f'{getpass.getuser()} 的'
content += f'详细评测汇总已输出至 {osp.abspath(output_path)}'
self.lark_reporter.post(content)
if output_path is None:
output_path = osp.join(self.work_dir, 'summary', f'summary_{time_str}.txt')