my string examples | Python Fiddle

str = "This is a string"

print "string:", str
#str = str.swapcase()
print "swapcase: ", str.swapcase()
print "title: ", str.title()
print "upper: ", str.upper()
print "lower: ", str.lower()
strnumb = "123"
print "number ", strnumb
print "zfill filled number ", strnumb.zfill(20)
print "zfill filled number ", str.zfill(20)
print str[0]
print str[0:4]

print "find ", str.find("is")
print str.replace(" ","")

spacy = "  this is a spacy string   "

print spacy
print spacy.lstrip()
print spacy.rstrip()
print spacy.strip()

startstring = "this string starts @ with this !"
if startstring.startswith("his"):
    print "yes"
else:
    print "no"
    
atpos = startstring.find('@')
print startstring, " atpos ", atpos   
expos = startstring.find('!',atpos)
print startstring, " expos ", expos 
print startstring[atpos + 1:expos]
print startstring[atpos + 1:expos].strip()
print len(startstring)

#while loop through strings
index = 0
while index < len(str):
    #print str[index]
    index = index + 1
#for loop through string  
count = 0
 
for letter in str:
        #print letter
        if letter == 'a':
            count = count + 1
print "count of string letters a: ", count

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