1.
solution
code
output
copyable code
#import the re module
import re
# regular expression
regex = r"([a-zA-Z]+) (\d+)"
matchdata = re.search(regex, "March 1, 2019, Mar 1, 2019, March First, 2019, March First, 19")
if matchdata != None:
# display the month
print "string matches: %s" % (matchdata.group(1))
#does not match the regular expression string
else:
print "The regex pattern does not match."
2.
coding
output
copyable code
import re
#check the valid train process
def isValid_Train(train1):
pattern1 = r'^E+(((P|PP|PPP|PPPP)D)*(BB)*)*C$'
if re.match(pattern1, train1):
return True
return False
#print the reult
def check_Print_Train(train1):
print("Train", train1, "is valid:", isValid_Train(train1))
check_Print_Train("EC")
check_Print_Train("EEEPPDBBPDBBBBC")
check_Print_Train("EEBB")
check_Print_Train("EBBBC")
check_Print_Train("EEPPPPPPDBBC")
check_Print_Train("EEPPBBC")
check_Print_Train("EEBBDC")
Use the Python “re” module to do the following: 1. Write a regular expression pattern that matche...
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