[PYTHON] Various character string operations

Fill

Right justified

python

print "{:<10}".format("python")
# => "python    "

print "{:!<10}".format(123)
# => "123!!!!!!!"

Left justified

python

print "{:>10}".format("python")
# => "    python"

print "{:0>10}".format(123)
# => "0000000123"

Left and right packing

python

print "{:^10}".format("python")
# => "  python  "

print "{:#^10}".format('python')
# => "##python##"

Other string method examples

String methods (2.7.x) String method (3.5.1)

python

print '1'.zfill(5)
# => 00001
print '1'.rjust(5)
# =>     1
print '1'.ljust(5)
# => 1    
print 'python'.center(10, '#')
# => ##python##

Linking

format "This string formatting method is a new standard in Python 3.0, and new code is better than formatting with% as specified in string formatting operations." [^ 1]

python

print ('address:{city},{state},{country}'.format(city='Osaka-shi', state='Osaka', country='Japan'))
# => address:Osaka-shi,Osaka,Japan

print ('address:{0},{1},{2}'.format('Osaka-shi', 'Osaka', 'Japan'))
# => address:Osaka-shi,Osaka,Japan

[^ 1]: String method (str.format)