Posted Updated a minute read (About 212 words)

mosh python

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expression : a statement get a result

primitive type

boolean only -> False True

string

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message = """
dasf
as dg
adgs
asdg asdf
adsf
"""
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str1 = "hello"
str1[0]
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first = "Mosh"
last = "Hamedani"
full = f"{first + last}"

print(full)
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str1 = "Hello world"

str1.find("lo")
if "lo" in course:
    pass
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abs(-2.9)

import math
math.ceil(2.2)

falsy -> bool()
“”
0
None

ternary operator

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age = 22
# if age >= 18:
#     message = "Eligible"
# else:
#     message = "Not eligible"

message = "Eligible" if age >= 18 else "Not eligible"
print(message)

short circule

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if high_income and good_credit and not student:
    pass

如果high_income 是FALSE,good_credit 根本没有进行判断

“b” > “a” -> True

iterable

for x in “hello”
pass

function default return None

class level attribute

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class Point:
    default_color = "red"
    def __init__(self):
        pass

point = Point()
print(point.default_color)
print(Point.default_color)

class method

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class Point:
    def __init__(self, x, y):
        pass

    @classmethod
    def zero(cls):
        return cls(0, 0) # Point(0, 0)
        pass

point = Point.zero()
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class Point:
    def __init__(self, x, y):
        self.x = x
        self.y = y

    def __str__(self):
        return f"({self.x}, {self.y})"

point = Point(1, 2)
print(point)
print(str(point))

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