Scientific Programming Midterm

In python 2, print is not a function and is written as,
print "text"

Created with (), immutable, ordered list

Created with [], mutable

list[begin: end: skip] = list[1: 5: 2]

Begin: Index started at
End: Index ended at, this index is not included in the slice
Skip: Index to skip up to, using 2 would skip the next one and include the one after

They cannot be changed, modifications to string create entirely new strings.
The old one is automatically destroyed by python.

Dictionaries, lists

ints, floats, tuples, strings

__getitem__()
__len__()

for i in list:
print(i)

Write to the file immediately, do not buffer

Close the file

Opens a file without needing to close it

with open("output.dat", "w") as f:
for x in dictsList:
print("${:<10.2f} ${:<10.2f} ${:<10.2f} ${:<10.2f}".format(x["SubTotal"], x["Tax"], x["Tip"], x["Total"]), file = f)

def multiplyByTwo(num):
'''
Documentation goes here!
'''
return num * 2

is_2020 = lambda x: x["Year"] == "2020"

Code will attempt to run, and if an error is ran into, the error is handeled in the except block

if x < 0
raise Exception("No numbers less than 0")

i will act as a counter for how many iterations of the loop have been ran.
entry is the data for that specific index (i)

Create an iterator that allows you to iterate through the list.
You can use next to make it go from 1 to 2.

Iterates over multiple iterables in parallel.

Applys a function to every element in the iterable.

Applys a function to every element in an iterable, but returns true or false.

Yes.
No.

[0, 1, 4, 9, 16, 25]

[val for val in range(20) if val % 3 > 0]

An iterable object that produces values in sequence.
The entire object is not stored.

G = (n**2 for n in range(10))

Allows you to continue where you left off in a function, replaces return.

Strip removes a substring or specified characters from the beginning or end of an input string.
Split breaks the string based on a specified delimiter.