qq_35679961-优快云博客

转载 4: Create A Virtualenv( Challenge: Working with the Command Line)

You'll want to isolate the Python environment that your script is in by creating a virtual environment. This will allow you to install Python packages with the versions that the script expects.

2016-09-14 12:20:29 255

转载 3: Change File Permissions(Challenge: Working with the Command Line)

You don't want just anyone to be able to run your script. By editing permissions, you can make it so that only you can run the script. Instructions Edit the file permissions for sc

2016-09-14 12:09:00 315

转载 2: Creating A Script( Challenge: Working with the Command Line )

You'll now be able to create a Python script in the current folder. Instructions Create a Python script that takes in a command line argument and prints it. Use output redirecti

2016-09-14 11:57:41 275

转载 1: Command Line Python(Challenge: Working with the Command Line)

In the past few missions, you learned how to navigate the filesystem, create and modify files, and work with Python on the command line. You learned that it isn't enough to just know how to program in

2016-09-14 11:51:14 211

转载 10: Deactivating A Virtualenv(Command line Python scripting )

When you want to switch a virtualenv off so you can move to a different project, you can deactivate it with the deactivate command. You don't have to pass in the virtualenv name to the deactivate co

2016-09-14 11:48:47 242

转载 9: Command Line Arguments(Command line Python scripting)

You can also pass command line options into Python scripts. They can be retrieved inside the script using the sys package. The argv list allows you to retrieve the positional arguments passed into

2016-09-14 11:38:02 824

转载 8: Importing A File(Command line Python scripting)

One of the great things about Python is that we can import functions from one package into a file. We can also import functions and classes from one file into another file. This gives us a powerful wa

2016-09-14 02:17:42 285

转载 7: Checking The Installed Packages(Command line Python scripting)

You can check the version of Python you're using with python -V. You can check which packages are currently installed and their versions withpip freeze. If you activate a virtualenv, all the packa

2016-09-14 02:11:34 271

转载 6: Activating A Virtualenv( Command line Python scripting )

Once a virtualenv is created, you can activate it using source python3/bin/activate (this assumes that the virtualenv is called python3, and the folder for the virtualenv is in our current directo

2016-09-14 02:07:57 197

转载 5: Python 3 Virtualenv(Command line Python scripting )

By default, virtualenv will use the pythonexecutable when it makes a new virtualenv, which means that it has the same version of Python as the system. In this case, we want to use python3 instead

2016-09-14 02:04:26 172

转载 4: Virtual Environments(Command line Python scripting )

In the previous screen, we used the default version of pip, which installed requests for thepython executable, which is Python version 2. What if we had instead wanted to installrequests for Py

2016-09-14 01:50:12 214

转载 3: Installing Packages(Command line Python scripting )

Packages are an important way to extend the functionality of Python. We've worked with packages like matplotlib and pandas. The best way to install packages is to use the command line, and a program

2016-09-14 01:47:55 262

转载 2: Python Versions(Command line Python scripting)

2: Python Versions There are actually two versions of Python on this machine. We ran the last script using the defaultpython executable, which is Python version 2. We'll instead want to use P

2016-09-14 01:45:12 229

原创 1: Command Line Python(Command line Python scripting)

We looked at the command line Python interpreter in the last mission. The interpreter lets you run Python commands and see their results immediately. It's very useful for quickly testing snippets of c

2016-09-14 01:40:24 511

原创 compution average in python: mean(),pivot_table()

import pandas as pd # This is the same value that we computed in the last screen, but it's much simpler. # The ease of using the .mean() method is great, but it's important to understand how the

2016-09-08 19:54:20 453

原创 titanic survival 2

#########hte idea is to create an table which contains just 1's and 0's.The array will be a surbibal reference table.whereby you read in the ##########tet data,find out passenger attributes,look the

2016-07-25 16:48:25 347

原创 titanic survival 1

###python has a nice csv reader,which reads each line of a file into memory.You can read in each row and just append a list.From there,you can ####quickly trun it into an array.The first thing to do

2016-07-25 14:35:44 282

原创 CSVs in Python 1

#Representing a CSV as a list of rows #Option 1: Each row is a list csv=[['A1','A2','A3'], ['B1','B2','B3']] #Option 2:Each row is a dictionary csv=[{'name1':'A1','name2'

2016-07-22 21:24:56 182

原创 CSVs in Python 2

##### the first way import unicodecsv def read_csv(filename): with open('enrollments.csv','rb') as f : reader=unicodecsv.DictReader(f) enrollments=list(reader) with open('daily_enga

2016-07-22 21:22:33 567

原创 CSVs in Python