python string indexing
str = 'codegrepper'
# str[start:end:step]
#by default: start = 0, end = len(str), step = 1
print(str[:]) #codegrepper
print(str[::]) #codegrepper
print(str[5:]) #repper
print(str[:8]) #codegrep
print(str[::2]) #cdgepr
print(str[2:8]) #degrep
print(str[2:8:2]) #dge
#step < 0 : reverse
print(str[::-1]) #reppergedoc
print(str[::-3]) #rpgo
# str[start:end:-1] means start from the end, go backward and stop at start
print(str[8:3:-1]) #ppergpython string replace index
# strings are immutable in Python,
# we have to create a new string which
# includes the value at the desired index
s = s[:index] + newstring + s[index + 1:]python string indexof
s = "mouse"
animal_letter = s.find('s')
print animal_letterpython index of string
string = "Hello World"
string_slice = string[1:10] # "ello Worl" (index 1 up to 10)
string_last_chars = string[-5:] # "World" (5th index from last to the end)
H = string[0] # "H"python list to string
mystring = 'hello, world'
mylist = string1.split(', ') #output => ['hello', 'world']
myjoin1 = ', '.join(mylist) #output => 'hello, world'
myjoin2 = ' '.join(mylist) #output => 'hello world'
myjoin3 = ','.join(mylist) #output => 'hello,world'python string index of
sentence = 'Python programming is fun.'
result = sentence.index('is fun')
print("Substring 'is fun':", result)
result = sentence.index('Java')
print("Substring 'Java':", result)Copyright © 2021 Codeinu
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