Last login: Fri Jan  9 08:50:11 on ttys000
odd% cd
odd% cd wp/lecture/2015_01_Intro_Programming/lecture3 
odd% ls
Lab1.pages       lab1_original.py sequence.txt
odd% vi lab1_original.py 
odd% python lab1_original.py sequence.txt 
  File "lab1_original.py", line 10
    out=file(fsp+".prot","w"))
                             ^
SyntaxError: invalid syntax
odd% vi x.py
odd% python x.py
Traceback (most recent call last):
  File "x.py", line 4, in <module>
    print a[4]
KeyError: 4
odd% !vi
vi x.py
odd% python x.py
There was an error!
odd% !vi
vi x.py
odd% python x.py
There was an error!
done
odd% !vi
vi x.py
odd% python x.py
There was an error!
done
odd% !vi
vi x.py
odd% python x.py
2
3
done
odd% !vi
vi x.py
odd% !vi
vi x.py
odd% python x.py
['x.py']
2
3
done
odd% python x.py this is a test
['x.py', 'this', 'is', 'a', 'test']
2
3
done
odd% !vi
vi x.py
odd% chmod a+x x.py
odd% x.py
['x.py']
2
3
done
odd% x.py Lab1.pages 
['x.py', 'Lab1.pages']
2
3
done
odd% ls
Lab1.pages       lab1_original.py sequence.txt     x.py
odd% ipython
Python 2.7.6 (default, Sep  9 2014, 15:04:36) 
Type "copyright", "credits" or "license" for more information.

IPython 2.0.0 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: f=open("sequence.txt","r")

In [2]: c=f.read()

In [3]: c
Out[3]: 'gatggcagctaaagacgtaaaatgaaaa\n'

In [4]: f=open("sequence.txt","r")

In [5]: f.read(10)
Out[5]: 'gatggcagct'

In [6]: f.read(10)
Out[6]: 'aaagacgtaa'

In [7]: f.read(10)
Out[7]: 'aatgaaaa\n'

In [8]: f.read(10)
Out[8]: ''

In [9]: f.read(10)
Out[9]: ''

In [10]: f=open("x.txt","w")

In [11]: f.write("this is a test\n
  File "<ipython-input-11-fef2424fe1b7>", line 1
    f.write("this is a test\n
                            ^
SyntaxError: EOL while scanning string literal


In [12]: "123"<"24.5"
KeyboardInterrupt

In [12]: f.write("this is a test\n")

In [13]: 
Do you really want to exit ([y]/n)? 
odd% ls
Lab1.pages       lab1_original.py sequence.txt     x.py             x.txt
odd% cat x.txt
this is a test
odd%