<jupyter_start><jupyter_text>python3 datetime<jupyter_code>from datetime import datetime
from datetime import time
from datetime import timezone

datetime(2020,1,9)#构造函数
datetime.now()
datetime.now(timezone.utc)
datetime.fromordinal(10)<jupyter_output><empty_output>
{'fraction_non_alphanumeric': 0.09398496240601503, 'fraction_numerical': 0.03383458646616541, 'mean_word_length': 11.136363636363637, 'pattern_counts': {'":': 0, '<': 5, '<?xml version=': 0, '>': 5, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'chain_length': '1', 'dir': 'jupyter-structured-clean-dedup', 'id': '638307', 'license': 'Apache-2.0', 'n_tokens_mistral': 98, 'n_tokens_neox': 95, 'n_words': 17, 'path': 'python/package/datatime/datatime.ipynb', 'repo_name': 'knowledgebao/language', 'size': '266'}