การจัดรูปแบบตามตำแหน่ง

Regular Expressions ใน Python

Maria Eugenia Inzaugarat

Data scientist

String formatting คืออะไร?

custom_string = "String formatting"
print(f"{custom_string} is a powerful technique")

String formatting is a powerful technique

print("Machine learning provides {} the ability to learn {}".format("systems", "automatically"))

Machine learning provides systems the ability to learn automatically

my_string = "{} rely on {} datasets"
method = "Supervised algorithms"
condition = "labeled"

print(my_string.format(method, condition))

Supervised algorithms rely on labeled datasets

print("{} has a friend called {} and a sister called {}".format("Betty", "Linda", "Daisy"))

Betty has a friend called Linda and a sister called Daisy

print("{2} has a friend called {0} and a sister called {1}".format("Betty", "Linda", "Daisy"))

Daisy has a friend called Betty and a sister called Linda

tool="Unsupervised algorithms"
goal="patterns"
print("{title} try to find {aim} in the dataset".format(title=tool, aim=goal))

Unsupervised algorithms try to find patterns in the dataset

my_methods = {"tool": "Unsupervised algorithms", "goal": "patterns"}

print('{data[tool]} try to find {data[goal]} in the dataset'.format(data=my_methods))

Unsupervised algorithms try to find patterns in the dataset

print("Only {0:f}% of the {1} produced worldwide is {2}!".format(0.5155675, "data", "analyzed"))

Only 0.515568% of the data produced worldwide is analyzed!

print("Only {0:.2f}% of the {1} produced worldwide is {2}!".format(0.5155675, "data", "analyzed"))

Only 0.52% of the data produced worldwide is analyzed!

from datetime import datetime
print(datetime.now())

datetime.datetime(2019, 4, 11, 20, 19, 22, 58582)

print("Today's date is {:%Y-%m-%d %H:%M}".format(datetime.now()))

Today's date is 2019-04-11 20:20

Regular Expressions ใน Python