Summaries
Week 2 - Further Python
第 2 周 - 进一步学习 Python
Comparisons
When we compare variables, they evaluate to a boolean (
TrueorFalse).Here are some of the comparison operators:
<less than>greater than<=less than or equal to>=greater than or equal to==equal!=not equal
We can combine multiple conditions using
andororand: both conditions have to beTrueto evaluate asTrueor: only one condition has to beTrueto evaluate asTrue
Conditionals
if, elif and else allows us to control the execution of different segments of code.
if condition_1:
# code you execute if condition 1 is true
elif condition_2:
# code you execute if condition 2 is true
elif condition_3:
# code you execute if condition 3 is true
...
else:
# code you execute if none of the conditions are true
if condition_1:
# code you execute if condition 1 is true
elif condition_2:
# code you execute if condition 2 is true
elif condition_3:
# code you execute if condition 3 is true
...
else:
# code you execute if none of the conditions are true
For loops
for value in iterable:
# code you want to execute
for value in iterable:
# code you want to execute
While loops
while condition:
# code that executes while condition is true
while condition:
# code that executes while condition is true