Important Functions in re module like finditer(),sub(),subn(),split() and attributes like re.IGNORECASE.

Author: rishabhjaiswal155

FunctioninreModule2.py

@@ -0,0 +1,42 @@
+#Important Functions in re module of Python:
+''' finditer('RegEx',TargetString) =returns the callable Iterator of matched object
+	sub(RegEx,replacement,target String)=returns the modified object after replacement if match found otherwise retuns None
+	subn(RegEx,replacement,target String)=retuns the tuple with result String and number of times it replaced
+	split('sepeartor',target String)=returns the list
+	^a=starts with a
+	a$=ends with a
+'''
+
+import re
+matcher=re.finditer('[0-9]','abd2345@ 456dhjd')
+print("Digits found in Target String:")
+for m in matcher:
+	print("starting index:{},group:{}".format(m.start(),m.group()))
+
+s=re.sub('\\d','#','abcd12fnk45@cj')
+print("Replacing Digits with # symbol:",s)
+
+t=re.subn('\\d','#','abcd12fnk45@cj')
+print(type(t))
+print("result String after replacing digits with #:",t[0])
+print("The number of replacement:",t[1])
+
+l=re.split('-','10-20-30-40-50-60')
+print("List after split Operation:",l)
+
+s="Learning Python is very easy"
+m=re.search('^Learn',s)
+if m!=None:
+	print("Target String starts with Learn")
+else:
+	print("Target String does not starts with Learn")
+	
+s="Learning Python is very easy"
+m=re.search('EASY$',s,re.IGNORECASE)
+if m!=None:
+	print("Target String ends with easy")
+else:
+	print("Target String does not ends with easy")
+
+
+