Python string functions

String Functions in Python

str="string in Python"
str1=""" a long
string with "quotes" or anything else"""
str1=input ("Please enter any string: ")
print(str)
print "hello", len("hello")

Strings are immutable, we can't change parts of string.
In Python, there is no char type, like in C++ or Java.

str[15:100]
str[-4]
str[:9]
str[1::2]
>>> str(10.3)

str1.title()
str1.upper()
str1.lower()
>>> str1.capitalize()
str1.islower()
str1.isdigit()
str1.isalpha()
str1.count('s')
str1.replace('t','s')
str1.find("i")
str1.find(".",8)

str1.split(",")
str1.split("/")[3]
str1.split("/")[-1].split(".")[-1]
str.split(sep=None, maxsplit=-1)
fields = date_string.split()
print ' '.join(fields[1:5])
str1.strip()
str1.rstrip()
str1.rstrip(";")
str1.lstrip()
line.strip(',')
line.strip().split()
for i in 'abcd'[::-1]: print(i)            # to print reverse of Python string

str1.ljust()
str1.rjust()
str.format()
print("My age is {1} and weight is {0} kgs.".format("35","65"))
str.center(width[, fillchar ])
>>> myName.center(10)
str.startswith(prefix[, start[, end ] ])
str.endswith(suffix[, start[, end ] ])
str.index("z")
str.translate(None,"012356789")
s = ustring.encode('utf-8')
t = unicode(s, 'utf-8') 

>>> 'Hi %s, I have %d rupees' % ('Thirumani', 44)

Operators plus (+) and multiplication (*) can be used on strings, in Python.
txt = "hello" + "world"
str2 + str4
"string" * 4

'satya' * 23

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