It is a web application
that allows you to create and share documents that contain
# my first python script
print("hello world! \n I am Cheng-Jun Wang.")
hello world! I am Cheng-Jun Wang.
Uses include:
print('hello world')
hello world
1 + 1
2
$E = MC^2$
(✿◡‿◡)害羞 ⁄(⁄ ⁄•⁄ω⁄•⁄ ⁄)⁄ d=====( ̄▽ ̄*)b厉害
我是我,不一样花火。~( ̄▽ ̄~)(~ ̄▽ ̄)~ 矜持
%matplotlib inline
import matplotlib.pyplot as plt
xi = [1, 2, 3, 4, 5]
y = [3, 5, 9, 13, 16]
plt.plot(xi, y, 'g-s')
plt.xlabel('$x_i$', fontsize = 20)
plt.ylabel('$y$', fontsize = 20)
plt.title('$Scatter\,Plot$', fontsize = 20)
plt.show()
C functions are typically split into header files (.h) where things are declared but not defined, and implementation files (.c) where they are defined. http://people.duke.edu/~ccc14/sta-663/CrashCourseInC.html#a-tutorial-example-coding-a-fibonacci-function-in-c
%%file hello.c
#include <stdio.h>
int main() {
printf("Hello, world!");
}
Overwriting hello.c
! gcc hello.c -o hello # 编译
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
! ./hello # 执行
Hello, world!
%lsmagic
Available line magics: %alias %alias_magic %autocall %automagic %autosave %bookmark %cat %cd %clear %colors %config %connect_info %cp %debug %dhist %dirs %doctest_mode %ed %edit %env %gui %hist %history %killbgscripts %ldir %less %lf %lk %ll %load %load_ext %loadpy %logoff %logon %logstart %logstate %logstop %ls %lsmagic %lx %macro %magic %man %matplotlib %mkdir %more %mv %notebook %page %pastebin %pdb %pdef %pdoc %pfile %pinfo %pinfo2 %popd %pprint %precision %profile %prun %psearch %psource %pushd %pwd %pycat %pylab %qtconsole %quickref %recall %rehashx %reload_ext %rep %rerun %reset %reset_selective %rm %rmdir %run %save %sc %set_env %store %sx %system %tb %time %timeit %unalias %unload_ext %who %who_ls %whos %xdel %xmode Available cell magics: %%! %%HTML %%SVG %%bash %%capture %%debug %%file %%html %%javascript %%js %%latex %%markdown %%perl %%prun %%pypy %%python %%python2 %%python3 %%ruby %%script %%sh %%svg %%sx %%system %%time %%timeit %%writefile Automagic is ON, % prefix IS NOT needed for line magics.
pip install version_information
!pip install version_information
Requirement already satisfied: version_information in /Users/datalab/Applications/anaconda/lib/python3.5/site-packages (1.0.3)
You are using pip version 19.0.3, however version 19.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
# install version_information in the terminal first.
%reload_ext version_information
%version_information numpy, matplotlib, pandas, scipy, statsmodels
Software | Version |
---|---|
Python | 3.5.4 64bit [GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] |
IPython | 6.2.1 |
OS | Darwin 18.6.0 x86_64 i386 64bit |
numpy | 1.16.3 |
matplotlib | 3.0.1 |
pandas | 0.23.4 |
scipy | 1.1.0 |
statsmodels | 0.9.0 |
Fri Jun 07 14:29:42 2019 CST |
This is the end.