How to compare specific items in a string python
E.g. in a given input the fourth digit must be one greater than the fifth digit
input = "5000-0000-0000"
if input[3] != input[5] + 1
return false
python
edited Nov 26 '18 at 3:07
Larry Lustig
40.4k1284130
add a comment |
E.g. in a given input the fourth digit must be one greater than the fifth digit
input = "5000-0000-0000"
if input[3] != input[5] + 1
return false
python
edited Nov 26 '18 at 3:07
Larry Lustig
40.4k1284130
add a comment |
E.g. in a given input the fourth digit must be one greater than the fifth digit
input = "5000-0000-0000"
if input[3] != input[5] + 1
return false
python
edited Nov 26 '18 at 3:07
Larry Lustig
40.4k1284130
E.g. in a given input the fourth digit must be one greater than the fifth digit
input = "5000-0000-0000"
if input[3] != input[5] + 1
return false
python
python
edited Nov 26 '18 at 3:07
Larry Lustig
40.4k1284130
edited Nov 26 '18 at 3:07
Larry Lustig
40.4k1284130
edited Nov 26 '18 at 3:07
Larry Lustig
40.4k1284130
edited Nov 26 '18 at 3:07
Larry Lustig
40.4k1284130
edited Nov 26 '18 at 3:07
Larry Lustig
40.4k1284130
40.4k1284130
asked Nov 26 '18 at 3:04
user10703449
add a comment |
add a comment |
1 Answer
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If you think about what input[3] and input[5] are, you will pretty quickly realize they are characters and not numbers that can be added or compared with mathematical operations (think about what would happen if you wrote input = "Andrew Francis").
You can see this by using print(type(input[3])).
Fortunately, if you have a string that contains only characters that make up a valid number, you can convert it to (for instance) an integer using the int() function. So, try print(type(int(input[3]))) and see what you get.
answered Nov 26 '18 at 3:11
Larry LustigLarry Lustig
40.4k1284130
Thank you Larry, Issue here is the input data is a mock credit card number that includes dashes, how would I go about converting just inputs 3 and 5 to integers and then performing the comparison?
– user10703449
Nov 26 '18 at 3:17
As cited in the answer, if you call theint()function on the string you're interested in, you'll get an integer value. So,int(input[3])returns an integer andint(input[5])returns the other integer you're interested in. Those values can be added to, compared, etc.
– Larry Lustig
Nov 26 '18 at 3:24
add a comment |
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1 Answer
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1 Answer
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oldest
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votes
If you think about what input[3] and input[5] are, you will pretty quickly realize they are characters and not numbers that can be added or compared with mathematical operations (think about what would happen if you wrote input = "Andrew Francis").
You can see this by using print(type(input[3])).
Fortunately, if you have a string that contains only characters that make up a valid number, you can convert it to (for instance) an integer using the int() function. So, try print(type(int(input[3]))) and see what you get.
answered Nov 26 '18 at 3:11
Larry LustigLarry Lustig
40.4k1284130
Thank you Larry, Issue here is the input data is a mock credit card number that includes dashes, how would I go about converting just inputs 3 and 5 to integers and then performing the comparison?
– user10703449
Nov 26 '18 at 3:17
As cited in the answer, if you call theint()function on the string you're interested in, you'll get an integer value. So,int(input[3])returns an integer andint(input[5])returns the other integer you're interested in. Those values can be added to, compared, etc.
– Larry Lustig
Nov 26 '18 at 3:24
add a comment |
If you think about what input[3] and input[5] are, you will pretty quickly realize they are characters and not numbers that can be added or compared with mathematical operations (think about what would happen if you wrote input = "Andrew Francis").
You can see this by using print(type(input[3])).
Fortunately, if you have a string that contains only characters that make up a valid number, you can convert it to (for instance) an integer using the int() function. So, try print(type(int(input[3]))) and see what you get.
answered Nov 26 '18 at 3:11
Larry LustigLarry Lustig
40.4k1284130
Thank you Larry, Issue here is the input data is a mock credit card number that includes dashes, how would I go about converting just inputs 3 and 5 to integers and then performing the comparison?
– user10703449
Nov 26 '18 at 3:17
As cited in the answer, if you call theint()function on the string you're interested in, you'll get an integer value. So,int(input[3])returns an integer andint(input[5])returns the other integer you're interested in. Those values can be added to, compared, etc.
– Larry Lustig
Nov 26 '18 at 3:24
add a comment |
If you think about what input[3] and input[5] are, you will pretty quickly realize they are characters and not numbers that can be added or compared with mathematical operations (think about what would happen if you wrote input = "Andrew Francis").
You can see this by using print(type(input[3])).
Fortunately, if you have a string that contains only characters that make up a valid number, you can convert it to (for instance) an integer using the int() function. So, try print(type(int(input[3]))) and see what you get.
answered Nov 26 '18 at 3:11
Larry LustigLarry Lustig
40.4k1284130
If you think about what input[3] and input[5] are, you will pretty quickly realize they are characters and not numbers that can be added or compared with mathematical operations (think about what would happen if you wrote input = "Andrew Francis").
You can see this by using print(type(input[3])).
Fortunately, if you have a string that contains only characters that make up a valid number, you can convert it to (for instance) an integer using the int() function. So, try print(type(int(input[3]))) and see what you get.
answered Nov 26 '18 at 3:11
Larry LustigLarry Lustig
40.4k1284130
answered Nov 26 '18 at 3:11
Larry LustigLarry Lustig
40.4k1284130
answered Nov 26 '18 at 3:11
Larry LustigLarry Lustig
40.4k1284130
answered Nov 26 '18 at 3:11
Larry LustigLarry Lustig
40.4k1284130
40.4k1284130
Thank you Larry, Issue here is the input data is a mock credit card number that includes dashes, how would I go about converting just inputs 3 and 5 to integers and then performing the comparison?
– user10703449
Nov 26 '18 at 3:17
As cited in the answer, if you call theint()function on the string you're interested in, you'll get an integer value. So,int(input[3])returns an integer andint(input[5])returns the other integer you're interested in. Those values can be added to, compared, etc.
– Larry Lustig
Nov 26 '18 at 3:24
add a comment |
Thank you Larry, Issue here is the input data is a mock credit card number that includes dashes, how would I go about converting just inputs 3 and 5 to integers and then performing the comparison?
– user10703449
Nov 26 '18 at 3:17
As cited in the answer, if you call theint()function on the string you're interested in, you'll get an integer value. So,int(input[3])returns an integer andint(input[5])returns the other integer you're interested in. Those values can be added to, compared, etc.
– Larry Lustig
Nov 26 '18 at 3:24
Thank you Larry, Issue here is the input data is a mock credit card number that includes dashes, how would I go about converting just inputs 3 and 5 to integers and then performing the comparison?
– user10703449
Nov 26 '18 at 3:17
Thank you Larry, Issue here is the input data is a mock credit card number that includes dashes, how would I go about converting just inputs 3 and 5 to integers and then performing the comparison?
– user10703449
Nov 26 '18 at 3:17
As cited in the answer, if you call the
int() function on the string you're interested in, you'll get an integer value. So, int(input[3]) returns an integer and int(input[5]) returns the other integer you're interested in. Those values can be added to, compared, etc.– Larry Lustig
Nov 26 '18 at 3:24
As cited in the answer, if you call the
int() function on the string you're interested in, you'll get an integer value. So, int(input[3]) returns an integer and int(input[5]) returns the other integer you're interested in. Those values can be added to, compared, etc.– Larry Lustig
Nov 26 '18 at 3:24
add a comment |
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