Python download file from url if not exist
url = 'http://www.americanradiohistory.com/Service_Magazine.htm' base_url = 'http://www.americanradiohistory.com/' ext = '.pdf' dir_dl = 'c://python_dl//' log_file = dir_dl+'log_file.dat' downloaded = [] lst_link = [] This data can be a file, a website or whatever you want Python to download. The module supports HTTP, Https, FTP and several other protocols. Args: data_dir: directory where we will access/save the census data """ tf.gfile.MakeDirs(data_dir) training_file_path = os.path.join(data_dir, Training_FILE) if not tf.gfile.Exists(training_file_path): _download_and_clean_file(training… The sample output above shows that several bundles are available for download, and that you have already installed the latest revision of the sdk_tools bundle, which was included in the zip file. import os # Pretty self explanatory but basically we check to see if the Me.png file exist # where we specifiy if not the statement returns false so then we tell our variable # to use a different source ex.) NoPhoto.png. if os . path .… Many of the answers below are not a satisfactory replacement for wget.Among other things, wget (1) preserves timestamps (2) auto-determines filename from url, appending .1 (etc.) if the file already exists (3) has many other options, some of which you may have put in your .wgetrc.If you want any of those, you have to implement them yourself in Python, but it's simpler to just invoke wget from
Example 1. The following code will determine if a HDF file named test.hdf exists: filename = "air.1948.nc" exists = isfilepresent(url+filename) if(.not.exists) then
If filename does not exist, the file is created. A URL can be used as a filename with this function if the fopen wrappers have been enabled. I faced the problem of converting a downloaded csv file that had Windows-1252 encoding, so to 3 Nov 2019 Alternatively, if you would like to install from source, you can check out the code from Github. 3 As long as an FS object exists for your chosen filesystem (or any data If you don't specify the protocol in the FS URL, then PyFilesystem will Not all Python modules can use file-like objects, especially those Cloud Storage allows developers to quickly and easily download files from a You can get the download URL for a file by calling the getDownloadURL() This can be done with the gsutil command line tool, which you can install from here. If you don't want any domain-based restrictions (the most common scenario), copy
This is a list of file formats used by computers, organized by type. Filename extensions are usually noted in parentheses if they differ from the file format name or abbreviation.
The legacy urllib.urlopen function from Python 2.6 and earlier has been discontinued; In this case you just have to assume that the download was successful. urllib.request.urlcleanup () This can lead to unexpected behavior when attempting to read a URL that points to a file that is not accessible. I needed to check whether some URLs were valid and I didn't need all the functionality of webchecker.py so I wrote this little recipe. The URL must start with 'http Join GitHub today. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Join GitHub today. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. The example above uses os module to check if the file exists. If this function returns False it could be that it does not exists or it is not a file. Checking path existence. If you want to know if a file, directory, symlink, etc exists and don't care about the type, then you could use exists function, which will return True or False. Learn how to leverage progress bars within your Juypter notebooks and Python applications @staticmethod def download_file_by_url(url, download_dir=None): if not does not exist'.format
urllib.request is a Python module for fetching URLs (Uniform Resource Locators). It offers a very simple interface, in the form of the urlopen function. This is capable of fetching URLs using a variety of different protocols. It also offers a slightly more complex interface for handling common situations - like basic authentication, cookies, proxies and so on.
pure python 3.x download utility. * -o option allows to select output file/directory * download(url, out, bar) contains out parameter 2.0 (2013-04-26) * it shows percentage * it renames file if it already exists * it can be used as a library * download(url) returns filename Here are the examples of the python api tensorflow.python.platform.gfile.Exists taken from open source projects. By voting up you can indicate which examples are most useful and appropriate. The following are code examples for showing how to use urllib.request.urlretrieve().They are from open source Python projects. You can vote up the examples you like or vote down the ones you don't like. Uploading and validating an image from an URL with Django Check that the mimetype after opening the file is image-like. Download the image from the server and assign to an ImageField in a model. Next we check whether or not the resource at the URL supplied by the user actually exists. If I have a list of URLs separated by \n, are there any options I can pass to wget to download all the URLs and save them to the current directory, but only if the files don't already exist? # Checking if the file already exists using the os.path.exists() method if not os. path. exists (download_path): # If not present then download the file using the urlretrieve() of the urlib.request # module which takes the url and download_path as the arguments urllib. request. urlretrieve (display_url, download_path)
And make sure the URL begins with ssh: and not https:).
python library for downloading from http URLs. Contribute to steveeJ/python-wget development by creating an account on GitHub. def download_nltk_package_if_not_present(package_name): """ Checks to see whether the user already has a given nltk package, and if not, prompts the user whether to download it. We download all necessary packages at install time, but this is just in case the user has deleted them.