python stringsとnumberの基本的なコード

数字型

#number

age = 99

pi = 3.14

print(age)

print(pi)

Output

>>

99
3.14

文字列

#strings

s = 'Rutherford Birchard Hayas'

tokens = s.split()

firstName = tokens[0]

middleName = tokens[1]

lastName = tokens[2]

s2 = firstName + " " + middleName + " " + lastName

print(s)

print(tokens)

print(firstName)

print(middleName)

print(lastName)

print(s2)

Output

>>

Rutherford Birchard Hayas
['Rutherford', 'Birchard', 'Hayas']
Rutherford
Birchard
Hayas
Rutherford Birchard Hayas

s = 'Rutherford Birchard Hayas'

tokens = s.split()

firstName = tokens[0]

middleName = tokens[1]

lastName = tokens[2]

s2 = firstName + " " + middleName + " " + lastName

if s == s2:

    print("yes!")

else:

    print("No!")

Output

>>

yes!

リストとfor

#list

beatles = ['John', 'Paul', 'George']

beatles.append('Ringo')

for b in beatles:

    print('Hello' + b)

Output

>>

HelloJohn
HelloPaul
HelloGeorge
HelloRingo

How to sort

#tuple

ages = (18, 21,28, 21, 22, 18, 19, 34, 9)

#set

uniqueAges = set(ages)

uniqueAges.add(18)     #既に18は入っているので意味がはない

uniqueAges.remove(21)  #21が取り除かれる

for thisAge in uniqueAges:

    print(thisAge)

   

if 18 in uniqueAges:

    print('This is 18years old present!')

   

orderedUniqueAges = sorted(uniqueAges)

print(orderedUniqueAges)

Output

>>

34
9
18
19
22
28
This is 18years old present!
[9, 18, 19, 22, 28, 34]

docs.python.org

pythonの辞書形式

#dict 辞書形式

netWorth = {}

netWorth['Donald Trump'] = 3000000000

netWorth['Bill Gates'] = 58000000000

netWorth['Tom Cruise'] = 40000000

netWorth['Joe Postdoc'] = 20000

for (person, worth) in netWorth.items():

    if worth < 1000000:

        print(person + 'is not a millionaire')

       

       

if 'Tom Cruise' in netWorth:

    print('Show me the money!')

Output

>>

Joe Postdocis not a millionaire
Show me the money!