python-2.x - w3toppers.com

How to send POST request?

If you really want to handle with HTTP using Python, I highly recommend Requests: HTTP for Humans. The POST quickstart adapted to your question is: >>> import requests >>> r = requests.post(“http://bugs.python.org”, data={‘number’: 12524, ‘type’: ‘issue’, ‘action’: ‘show’}) >>> print(r.status_code, r.reason) 200 OK >>> print(r.text[:300] + ‘…’) <!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”> … Read more

No module named MySQLdb

You need to use one of the following commands. Which one depends on what OS and software you have and use. easy_install mysql-python (mix os) pip install mysql-python (mix os/ python 2) pip install mysqlclient (mix os/ python 3) apt-get install python-mysqldb (Linux Ubuntu, …) cd /usr/ports/databases/py-MySQLdb && make install clean (FreeBSD) yum install MySQL-python … Read more

How to use XPath in Python?

libxml2 has a number of advantages: Compliance to the spec Active development and a community participation Speed. This is really a python wrapper around a C implementation. Ubiquity. The libxml2 library is pervasive and thus well tested. Downsides include: Compliance to the spec. It’s strict. Things like default namespace handling are easier in other libraries. … Read more

Writing Unicode text to a text file?

Deal exclusively with unicode objects as much as possible by decoding things to unicode objects when you first get them and encoding them as necessary on the way out. If your string is actually a unicode object, you’ll need to convert it to a unicode-encoded string object before writing it to a file: foo = … Read more

How to get string objects instead of Unicode from JSON?

While there are some good answers here, I ended up using PyYAML to parse my JSON files, since it gives the keys and values as str type strings instead of unicode type. Because JSON is a subset of YAML it works nicely: >>> import json >>> import yaml >>> list_org = [‘a’, ‘b’] >>> list_dump … Read more

Nested arguments not compiling

PEP 3113 explains why this feature, “tuple parameter unpacking”, was removed in Python 3. It also explains how to port code that uses them. In this case you’d need to change a function like: def add(self, (sub, pred, obj)): self._addToIndex(self._spo, sub, pred, obj) self._addToIndex(self._pos, pred, obj, sub) self._addToIndex(self._osp, obj, sub, pred) to a version which … Read more

How to run multiple Python versions on Windows

Running a different copy of Python is as easy as starting the correct executable. You mention that you’ve started a python instance, from the command line, by simply typing python. What this does under Windows, is to trawl the %PATH% environment variable, checking for an executable, either batch file (.bat), command file (.cmd) or some … Read more

How do I keep Python print from adding newlines or spaces? [duplicate]

In Python 3, use print(‘h’, end=”) to suppress the endline terminator, and print(‘a’, ‘b’, ‘c’, sep=”) to suppress the whitespace separator between items. See the documentation for print

What are the differences between the urllib, urllib2, urllib3 and requests module?

I know it’s been said already, but I’d highly recommend the requests Python package. If you’ve used languages other than python, you’re probably thinking urllib and urllib2 are easy to use, not much code, and highly capable, that’s how I used to think. But the requests package is so unbelievably useful and short that everyone … Read more