escape_string – escape a string for use within SQL Y - escape_bytea – escape binary data for use within SQL Y - unescape_bytea – unescape data that has been retrieved as text Y - get/set_namedresult – conve
但如果你尝试只去www.google.com/maps/place/870+Valencia+St+San+Francisco+CA,你会发现它仍然会调出正确的页面。所以你的程序可以设置打开一个 Web 浏览器到'https://www.google.com/maps/place/your_address_string'(其中your_address_string是你要映射的地址)。 第二步:处理命令行参数 让您的代码看起来像...
python with open("example.txt", "r") as file: content = file.read() # 在这里进行文件操作,文件会在代码块结束后自动关闭此外,还有其他文件操作函数和方法可供使用,例如重命名文件、删除文件等。【4】文件操作案例python # 版本1: with open("卡通.jpg", "rb") as f_read: data = f_read.read(...
read_csv( 'large.csv', chunksize=chunksize, dtype=dtype_map ) # # 然后每个chunk进行一些压缩内存的操作,比如全都转成sparse类型 # string类型比如,学历,可以转化成sparse的category变量,可以省很多内存 sdf = pd.concat( chunk.to_sparse(fill_value=0.0) for chunk in chunks ) #很稀疏有可能可以装的下...
# ref: https://mypy.readthedocs.io/en/stable/config_file.html#example-pyproject-toml# mypy global options:[tool.mypy] python_version ="2.7"warn_return_any = true warn_unused_configs = true exclude = ['^file1\.py$',# TOML literal string (single-quotes, no escaping necessary)"^file2\...
as attachment:part = MIMEBase('application', 'octet-stream')part.set_payload(attachment.read())encoders.encode_base64(part)part.add_header('Content-Disposition', f"attachment; filename= {file_path}")message.attach(part)server.se...
``` # Python script to merge multiple Excel sheets into a single sheet import pandas as pd def merge_sheets(file_path, output_file_path): xls = pd.ExcelFile(file_path) df = pd.DataFrame() for sheet_name in xls.sheet_names: sheet_df = pd.read_excel(xls, sheet_name) df = df.ap...
""" import http.client import string import re import os import sys import xml.etree.ElementTree as etree import stat import logging import traceback import glob import ops import ipaddress from hashlib import sha256 from urllib.request import urlretrieve from urllib.parse import urlparse, urlun...
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loader=Loader(stream)try:returnloader.get_single_data()finally:loader.dispose()defdump(data,stream=None,Dumper=Dumper,**kwds):""" Serialize a Python object into aYAMLstream.If stream is None,returnthe produced string instead."""returndump_all([data],stream,Dumper=Dumper,**kwds) ...