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Python/basics/string_example.py at optimization · examplehub/Python · GitHub

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def main():

"""

>>> print("ExampleHub")

ExampleHub

>>> my_str = "ExampleHub"

>>> print(my_str)

ExampleHub

>>> my_str = "abc"

>>> my_str[0]

'a'

>>> my_str[1]

'b'

>>> my_str[2]

'c'

>>> my_str[-1]

'c'

>>> my_str = "123456"

>>> for i in range(0, 6):

... assert my_str[i] == str(i + 1)

>>> for char in my_str:

... print(char, end='')

123456

>>> my_str = "abc123456"

>>> my_str[0:3]

'abc'

>>> my_str[:3]

'abc'

>>> my_str[3:9]

'123456'

>>> my_str[3:]

'123456'

>>> my_str[-3:-1]

'45'

>>> my_str[-3:]

'456'

>>> my_str[::-1]

'654321cba'

>>> len("")

0

>>> my_str = "abc123"

>>> len(my_str)

6

>>> my_str = " I love python. "

>>> my_str.strip()

'I love python.'

>>> my_str.strip().lower()

'i love python.'

>>> my_str.strip().upper()

'I LOVE PYTHON.'

>>> my_str.strip().replace("python", "u")

'I love u.'

>>> my_str.split()

['I', 'love', 'python.']

>>> "love" in my_str

True

>>> "LOVE" not in my_str

True

>>> first_name = "Example"

>>> last_name = "Hub"

>>> name = first_name + last_name

>>> name

'ExampleHub'

>>> name = first_name + last_name + "/Python"

>>> name

'ExampleHub/Python'

>>> my_str = "6" * 3

>>> my_str

'666'

>>> name = "Python"

>>> age = 29

>>> intro = "My name is {}. I'am {}.".format(name, age)

>>> intro

"My name is Python. I'am 29."

>>> import math

>>> pi_str = "pi = {:.2f}"

>>> pi_str = pi_str.format(math.pi)

>>> pi_str

'pi = 3.14'

>>> pi_str = f"pi = {math.pi}"

>>> pi_str

'pi = 3.141592653589793'

>>> pi_str = f"pi = {math.pi:.2f}"

>>> pi_str

'pi = 3.14'

>>> my_str = "abc"

>>> del my_str

>>> 'my_str' not in locals()

True

"""

if __name__ == "__main__":

from doctest import testmod

testmod()

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