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"""
AppVeyor will at least have few Pythons around so there's no point of implementing a bootstrapper in PowerShell.
This is a port of https://github.com/pypa/python-packaging-user-guide/blob/master/source/code/install.ps1
with various fixes and improvements that just weren't feasible to implement in PowerShell.
"""
from __future__ import print_function
from os import environ
from os.path import exists
from subprocess import check_call
try:
from urllib.request import urlretrieve
except ImportError:
from urllib import urlretrieve
BASE_URL = "https://www.python.org/ftp/python/"
GET_PIP_URL = "https://bootstrap.pypa.io/get-pip.py"
GET_PIP_PATH = "C:\get-pip.py"
URLS = {
("2.7", "64"): BASE_URL + "2.7.13/python-2.7.13.amd64.msi",
("2.7", "32"): BASE_URL + "2.7.13/python-2.7.13.msi",
("3.4", "64"): BASE_URL + "3.4.4/python-3.4.4.amd64.msi",
("3.4", "32"): BASE_URL + "3.4.4/python-3.4.4.msi",
("3.5", "64"): BASE_URL + "3.5.4/python-3.5.4-amd64.exe",
("3.5", "32"): BASE_URL + "3.5.4/python-3.5.4.exe",
("3.6", "64"): BASE_URL + "3.6.2/python-3.6.2-amd64.exe",
("3.6", "32"): BASE_URL + "3.6.2/python-3.6.2.exe",
}
INSTALL_CMD = {
# Commands are allowed to fail only if they are not the last command. Eg: uninstall (/x) allowed to fail.
"2.7": [["msiexec.exe", "/L*+!", "install.log", "/qn", "/x", "{path}"],
["msiexec.exe", "/L*+!", "install.log", "/qn", "/i", "{path}", "TARGETDIR={home}"]],
"3.4": [["msiexec.exe", "/L*+!", "install.log", "/qn", "/x", "{path}"],
["msiexec.exe", "/L*+!", "install.log", "/qn", "/i", "{path}", "TARGETDIR={home}"]],
"3.5": [["{path}", "/quiet", "TargetDir={home}"]],
"3.6": [["{path}", "/quiet", "TargetDir={home}"]],
}
def download_file(url, path):
print("Downloading: {} (into {})".format(url, path))
progress = [0, 0]
def report(count, size, total):
progress[0] = count * size
if progress[0] - progress[1] > 1000000:
progress[1] = progress[0]
print("Downloaded {:,}/{:,} ...".format(progress[1], total))
dest, _ = urlretrieve(url, path, reporthook=report)
return dest
def install_python(version, arch, home):
print("Installing Python", version, "for", arch, "bit architecture to", home)
if exists(home):
return
path = download_python(version, arch)
print("Installing", path, "to", home)
success = False
for cmd in INSTALL_CMD[version]:
cmd = [part.format(home=home, path=path) for part in cmd]
print("Running:", " ".join(cmd))
try:
check_call(cmd)
except Exception as exc:
print("Failed command", cmd, "with:", exc)
if exists("install.log"):
with open("install.log") as fh:
print(fh.read())
else:
success = True
if success:
print("Installation complete!")
else:
print("Installation failed")
def download_python(version, arch):
for _ in range(3):
try:
return download_file(URLS[version, arch], "installer.exe")
except Exception as exc:
print("Failed to download:", exc)
print("Retrying ...")
def install_pip(home):
pip_path = home + "/Scripts/pip.exe"
python_path = home + "/python.exe"
if exists(pip_path):
print("pip already installed.")
else:
print("Installing pip...")
download_file(GET_PIP_URL, GET_PIP_PATH)
print("Executing:", python_path, GET_PIP_PATH)
check_call([python_path, GET_PIP_PATH])
def install_packages(home, *packages):
cmd = [home + "/Scripts/pip.exe", "install"]
cmd.extend(packages)
check_call(cmd)
if __name__ == "__main__":
install_python(environ['PYTHON_VERSION'], environ['PYTHON_ARCH'], environ['PYTHON_HOME'])
install_pip(environ['PYTHON_HOME'])
install_packages(environ['PYTHON_HOME'], "setuptools>=18.0.1", "wheel", "tox", "virtualenv>=13.1.0")
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