Python resources

[Mark Barkey]

Python

https://www.python.org/


ABAQUS through 6.14 appears to use Python 2.7.x

reserved words
https://docs.python.org/2/reference/lexical_analysis.html

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and
del     
from     
not       
while
as   
elif     
global   
or     
with
assert
else     
if       
pass   
yield
break
except
import 
print
class   
exec     
in       
raise
continue
finally
is   
return
def     
for     
lambda 
try


[Mark Barkey]

python identifiers:  variables, functions, modules, classes

class identifiers start in uppercase


indents are used as code blocks


if - elif    is an if-elseif         block


comments use #
#this is a comment

[Mark Barkey]

built in functions
https://docs.python.org/2/library/functions.html

[Mark Barkey]

Basic examples  python 2.7.x

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#error in
#https://www.amazon.com/Python-Beginners-Guide-Programming-Code-ebook/dp/B01MYO0CMV/ref=sr_1_1
#text string requires 'text'

print('Hello, World!')

#error in
#https://www.amazon.com/Python-Beginners-Programming-beginners-programming-ebook/dp/B01N3N6768/ref=sr_1_2
#input does not work, needed raw_input
#variable name is different than Name; uppercase and lowercase are different variables

name = raw_input('what is yourname?')

print ('Hello ' + name + '!')

             


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#error in
#https://www.amazon.com/Python-Beginners-Guide-Programming-Code-ebook/dp/B01MYO0CMV/ref=sr_1_1
#text string requires 'text'

print('Hello, World!')

#error in
#examples below from this book, but corrected to work properly
#https://www.amazon.com/Python-Beginners-Programming-beginners-programming-ebook/dp/B01N3N6768/ref=sr_1_2
#input does not work, needed raw_input
#variable name is different than Name; uppercase and lowercase are different variables

#comment out these lines, but they do work
#name = raw_input('what is yourname?')
#print ('Hello ' + name + '!')


#this example doesn't work
#print(name[0]Upper()+[1:]Lower())


print (0.6/0.2)

#  to slashes represent floor division; see the following for more details
#http://python-history.blogspot.com/2010/08/why-pythons-integer-division-floors.html

print (0.6//0.2)

a = round (3.14159, 2)
print a

a = round (3.14159, 4)
print a

stringa = str(a)

#the variable name below will not work
#string-a = str(a)

print ('pi to four digits:  ' + stringa)


#mutable means variable can change values
#immutable means that the variable cannot change values


#strings

#\n newline
#\t tab
#\\ backslash
#\' single quote
#\" double quote


#index 0 on left, -1 on right side

#empty_tupl is not defined
#print(empty_tupl)


#these beginning python books are hoorendously written

A = [66.25, 333, 333, 1, 1234.5]
print A.count(333)
print A.count(66.25)
print A.count('x')

#inserts -1 into list after element 2
A.insert(2,-1)
#appends antother 333 at the end of the list
A.append(333)
print A

#removes the first 333
A.remove(333)
print A

A.reverse()
print A

A.sort()
print A

A.pop()
print A