Engr Final Flashcards
==
equal
=
assigning
!=
does not equal too
<
less than
>
greater than
<=
less than or equal too
> =
greater than or equal too
and
both/all must be true
or
if any are true, whole thing is true
not
True becomes False; False becomes true
is
return true, if what is given is the same
is not
return true, if what is given is not the same
in
returns true, if what is given is in the date set
not in
returns true, if what is given is not in the data set
not (A and B)
((not A) or (not B))
not ( A or B)
((not A) or (not B))
How does the format slicing look like?
[x:y]
For slicing what is the starting index?
0
How does the format for slicing look like, when you wanna start at the end of the string?
str[-1]
Slicing:
What does the format look like if you want to start from the beginning till the end?
str[0:] or str[:]
Slicing:
What does the format look like if you want to end at certain spot?
str[:stop]
Slicing:
What does the format look like if you want to start and end at a certain spot?
str[start:stop]
Slicing:
what the does format look like when you only one character for the list?
str[num] or str[‘word’]
Slicing:
What does the format look like if you want to reverse the string?
str[::-1]
x = [2, 4, 6, 8, 10]
a) reverse the list
b) start at the 6 and end at 10
c) take just 10
y = x[::-1]
y = x[2:]
y = x[4]
Can the variable you’re naming start with a lowercase or uppercase letter?
yes
Can your variable start with an underscore?
yes, (but not recommended)
Can your variable name start with a number?
No
Can your variable name contain numbers and underscores?
yes
%, return what?
remainder
// , returns what?
returns number without the reminder
x = int(2.4)
print(x)
Output?
2
x = int(‘2.4’)
print(x)
Output?
Error (can’t be string)
x = float(‘2’)
print(x)
Output?
2.0 ( the string represents a number)
x = float(‘andrea’)
print(x)
Output?
Error (the variable inside doesn’t represent a number)
x = str(2.4)
print(x)
y = str(2)
print(y)
Output?
‘2.4’
‘2’
0 and 0.0
True or False?
False
Any other number, besides 0 and 0.0. Are they true or false?
True
str(‘’)
true or false?
false
x = [1, 2, 3, 4]
x.append(5)
print(x)
Output?
[1, 2, 3, 4, 5]
x = [1, 2, 3, 4]
x.append(5)
y = [6, 7, 8, 9]
x += y
print(x)
Output?
[1, 2, 3, 4, 5, 6, 7, 8, 9]
x = [1, 2, 3, 4]
x.pop(2)
print(x)
Output?
[1, 2, 4]
x = [1, 2, 3, 4]
x.remove(1)
print(x)
Output?
[2, 3, 4]
x = [1, 2, 3, 4]
x.insert(3,5)
print(x)
Output?
[1, 2, 3, 5, 4]
x = [0, 1, 2, 3, 4]
print(len(x))
Output?
5
x = [0, 1, 2, 3, 4]
print(x[-1])
Output?
4
x = [0, 1, 2, 3, 4]
print(x[0:2])
[0, 1]
