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MAC:Mon Feb 28:14:11:~> python
Python 3.10.0 (v3.10.0:b494f5935c, Oct  4 2021, 14:59:19) [Clang 12.0.5 (clang-1205.0.22.11)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> type(range(10))
<class 'range'>
>>> for item in range(10):
...     print(item, item*item)
... 
0 0
1 1
2 4
3 9
4 16
5 25
6 36
7 49
8 64
9 81
>>> for item in range(5):
...     print("Bart is a brat.")
... 
Bart is a brat.
Bart is a brat.
Bart is a brat.
Bart is a brat.
Bart is a brat.
>>> for item in range(2,6):
...     print(item)
... 
2
3
4
5
>>> for item in range(2, 200, 7):
...     print(item)
... 
2
9
16
23
30
37
44
51
58
65
72
79
86
93
100
107
114
121
128
135
142
149
156
163
170
177
184
191
198
>>> for item in range(0, 1, .1):
...     print(item)
... 
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'float' object cannot be interpreted as an integer
>>> ## ugly
>>> for item in range(10,-1, -1):
...     print(item)
... 
10
9
8
7
6
5
4
3
2
1
0
>>> for item in reversed(range(0,11)):
...     print(item)
... 
10
9
8
7
6
5
4
3
2
1
0
>>> x = ["a", "b", "c", "d", "e"]
>>> 
>>> for k in x:
...     print(k)
... 
a
b
c
d
e
>>> for k in reversed(x):
...     print(k)
... 
e
d
c
b
a
>>> t = ("a", "b", "c", "d", "e")
>>> for k in t:
...     print(k)
... 
a
b
c
d
e
>>> d = {"cat": "meow", "dog", "woof", "pig":"reeet"}
  File "<stdin>", line 1
    d = {"cat": "meow", "dog", "woof", "pig":"reeet"}
                            ^
SyntaxError: ':' expected after dictionary key
>>> d = {"cat": "meow", "dog": "woof", "pig":"reeet"}
>>> for item in d:
...     print(item)
... 
cat
dog
pig
>>> for item in d:
...     print(d[item])
... 
meow
woof
reeet
>>> for item in d.values():
...     print(item)
... 
meow
woof
reeet
>>> s = {1,2,3,4,"cow", "elephant", (1,2,3)}
>>> for k in s:
...     print(k)
... 
1
2
elephant
3
4
cow
(1, 2, 3)
>>> for k in s:
...     print(k)
... 
1
2
elephant
3
4
cow
(1, 2, 3)
>>> for quack in "mallard":
...     print(quack)
... 
m
a
l
l
a
r
d
>>> ^D
MAC:Mon Feb 28:14:30:~> ls
20212022
211
ACSL
App.class
App.java
Applications
CLASSES
Classes20161017
Classes20172018
Classes20182019
Classes20192020
Classes20202021
Crash.class
Crash.java
D3Book
Desktop
Documents
Downloads
Driver.class
Driver.java
Hello.java
HelloFX.class
HelloFX.java
LSPCobol
Library
Math-for-Programmers
Movies
Music
Order.class
Person.class
Person.java
Pictures
Pictures.zip
Point.class
Point.java
Point.py
Public
Stand.java
Test.java
a.out
a.py
accident
amigocode
api_key.txt
apple.txt
assorted
bash
bigFractionAssignment
bin
bin.txt
book
books
box
buf
challenge
chararrays
codingBooks
com.paloaltonetworks.GlobalProtect.settings.plist
comp
convert.sed
convert.set
data
dataviz-with-python-and-js
dump.txt
eclipse
eclipse-workspace
endian
endian.c
fatCow.txt.moo
first.cbl
flask
foo
foo.asm
foo.c
foo.cpp
foo.o
foo.py
gdb-entitlement.xml
generatorInfo.docx
google-cloud-sdk
gs
gs.c
guineapig
hello
hello.c
hello.cbl
hello.cob
hello.js
hello.o
hello.py
hint.py
image.php
is_perfect.py
javaclass
javaprep.sh
leaker
leaker.c
leaker.dSYM
logins.csv
miles.dat
miles1.dat
miniterm
moo
moo.dSYM
moreProgramming
morrison
morrison.c
newEdition
nodeLists
node_modules
ocw
package-lock.json
package.json
personal
personal2
phone.txt
pictures2
pix
programming
recursion
reeeet
regex
rodent
sample.py
sampler.txt
schoolImages
stackHeap.py
startPage.html
stateConvert.sed
sum
teaching
test
test.awk
test.c
test.js
test_harder.py
words.txt
youTube
MAC:Mon Feb 28:14:30:~> B
MAC:Mon Feb 28:14:30:4240> ls
0221              commando.py       list_tupe.zip     roster.txt
0222              detect_os.py      list_tuple        rosterB.txt
0228              first.py          list_tuple.py     rosterF.txt
Bsessions         foo               list_tuple_key.py students
Fsessions         half_triangle.py  match.py          triggie.py
__pycache__       hello.py          match_game.py     unit_convert.py
client.py         iffy.py           new_folder        wabbit.py
MAC:Mon Feb 28:14:30:4240> mkdir 0228F
MAC:Mon Feb 28:14:30:4240> cd 0228F
MAC:Mon Feb 28:14:30:0228F> vi sampler.txt
MAC:Mon Feb 28:14:31:0228F> python
Python 3.10.0 (v3.10.0:b494f5935c, Oct  4 2021, 14:59:19) [Clang 12.0.5 (clang-1205.0.22.11)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> fp = open("sampler.txt", "r")
>>> print(fp)
<_io.TextIOWrapper name='sampler.txt' mode='r' encoding='UTF-8'>
>>> for foo in fp:
...     print(fp + "FOO")
... 
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
TypeError: unsupported operand type(s) for +: '_io.TextIOWrapper' and 'str'
>>> for foo in fp:
...     print(foo + "FOO")
... 
ABCDEFGHIJKLMNOPQRSTUVWXYZ
FOO
0123456789
FOO
!@#$%^&*()
FOO
>>> fp = open("sampler.txt", "r")
>>> for line in fp:
...     print(line, end = "")
... 
abcdefghijklmnopqrstuvwxyz
ABCDEFGHIJKLMNOPQRSTUVWXYZ
0123456789
!@#$%^&*()
>>> 
KeyboardInterrupt
>>> ^D
MAC:Mon Feb 28:14:36:0228F> vi copy.py
MAC:Mon Feb 28:14:41:0228F> python copy.py sampler.txt foo.txt
MAC:Mon Feb 28:14:42:0228F> diff sampler.txt foo.txt 
MAC:Mon Feb 28:14:42:0228F> cat foo.txt 
abcdefghijklmnopqrstuvwxyz
ABCDEFGHIJKLMNOPQRSTUVWXYZ
0123456789
!@#$%^&*()
MAC:Mon Feb 28:14:42:0228F> !vi
vi copy.py
MAC:Mon Feb 28:14:45:0228F> cp copy.py copy_better.py
MAC:Mon Feb 28:14:45:0228F> vi copy_better.py 
MAC:Mon Feb 28:14:47:0228F> ls
copy.py        copy_better.py foo.txt        sampler.txt
MAC:Mon Feb 28:14:47:0228F> python
Python 3.10.0 (v3.10.0:b494f5935c, Oct  4 2021, 14:59:19) [Clang 12.0.5 (clang-1205.0.22.11)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> with open("copy.py", "r") as fp:
...     entrails = fp.read()
... 
>>> print(entrails)
## python copy.py donor recipient
from sys import argv
import os
donor = argv[1]
recipient = argv[2]
if len(argv) < 3:
    print("Usage: python copy.py donor recipient")
    quit()
##  open the donor for readding
if not os.path.exists(donor):
    print("Donor file does not exist.  Bailing!")
    quit()
fp_in = open(donor, "r")
##  open the recipient for writing
fp_out = open(recipient, "w")
##  get a line from donor, place in recippent until donor exhausted
for line in fp_in:
    fp_out.write(line)
##  Mr. Rogers:  close files when done.
fp_in.close()
fp_out.close()



>>> entrails
'## python copy.py donor recipient\nfrom sys import argv\nimport os\ndonor = argv[1]\nrecipient = argv[2]\nif len(argv) < 3:\n    print("Usage: python copy.py donor recipient")\n    quit()\n##  open the donor for readding\nif not os.path.exists(donor):\n    print("Donor file does not exist.  Bailing!")\n    quit()\nfp_in = open(donor, "r")\n##  open the recipient for writing\nfp_out = open(recipient, "w")\n##  get a line from donor, place in recippent until donor exhausted\nfor line in fp_in:\n    fp_out.write(line)\n##  Mr. Rogers:  close files when done.\nfp_in.close()\nfp_out.close()\n\n\n'
>>> "donor in entrails
  File "<stdin>", line 1
    "donor in entrails
    ^
SyntaxError: unterminated string literal (detected at line 1)
>>> "donor" in entrails
True
>>> fp.tell()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: I/O operation on closed file.
>>> fp = open("sampler.txt", "r")
>>> fp.read(5)
'abcde'
>>> fp.read(1)
'f'
>>> fp.read()
'ghijklmnopqrstuvwxyz\nABCDEFGHIJKLMNOPQRSTUVWXYZ\n0123456789\n!@#$%^&*()\n'
>>> fp.tell()
76
>>> fp.read()
''
>>> fp.seek(0)
0
>>> fp.seek(50)
50
>>> fp.read(1)
'X'
>>> x = os.listdir()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'os' is not defined
>>> import os
>>> x = os.listdir()
>>> for item in x:
...     print(item)
... 
copy.py
foo.txt
copy_better.py
sampler.txt
>>> for item in x:
...     if item.endswith(".py"):
...             print(item)
... 
copy.py
copy_better.py
>>> ^D
MAC:Mon Feb 28:14:54:0228F> ls
copy.py        copy_better.py foo.txt        sampler.txt
MAC:Mon Feb 28:14:55:0228F> sftp utility0
Connected to utility0.
sftp> cd public_html/currentClasses/4240/Feb/28Feb22/F
sftp> put *
Uploading copy.py to /home/morrison/public_html/currentClasses/4240/Feb/28Feb22/F/copy.py
copy.py                                       100%  575   104.9KB/s   00:00    
Uploading copy_better.py to /home/morrison/public_html/currentClasses/4240/Feb/28Feb22/F/copy_better.py
copy_better.py                                100%  473    60.6KB/s   00:00    
Uploading foo.txt to /home/morrison/public_html/currentClasses/4240/Feb/28Feb22/F/foo.txt
foo.txt                                       100%   76    10.1KB/s   00:00    
Uploading sampler.txt to /home/morrison/public_html/currentClasses/4240/Feb/28Feb22/F/sampler.txt
sampler.txt                                   100%   76    12.3KB/s   00:00    
sftp> quit
MAC:Mon Feb 28:14:56:0228F>