For loop to print old value and sum of old value

up vote
6
down vote

favorite

I am using for loop in python to display old value and sum of new value. Following is my code.

numbers = [6, 5, 3, 8, 4, 2, 5, 4, 11]
sum = 0
for val in numbers:

 sum = sum+val
print(sum)

and the output of this loop is showing 48

But i want to show output like

Please let me know what i need to change in my code to display output like this.

asked Nov 18 at 8:25

Ramona

414

New contributor

2

First thing first: Your print statement is outside the loop. This means it will only execute once.
– Anton vBR
Nov 18 at 8:27

@Anton vBR But when i print statement inside the loop then following error is showing :- File "<module1>", line 5 print(sum) ^ IndentationError: unindent does not match any outer indentation level
– Ramona
Nov 18 at 8:30

2

Python forces you to use the correct indentation. Be careful that you have the right amount of spaces/tabs.
– Anton vBR
Nov 18 at 8:31

and dont mix spaces and tabs in python3.x
– Patrick Artner
Nov 18 at 8:57

add a comment |

up vote
6
down vote

favorite

I am using for loop in python to display old value and sum of new value. Following is my code.

numbers = [6, 5, 3, 8, 4, 2, 5, 4, 11]
sum = 0
for val in numbers:

 sum = sum+val
print(sum)

and the output of this loop is showing 48

But i want to show output like

Please let me know what i need to change in my code to display output like this.

asked Nov 18 at 8:25

Ramona

414

New contributor

2

First thing first: Your print statement is outside the loop. This means it will only execute once.
– Anton vBR
Nov 18 at 8:27

@Anton vBR But when i print statement inside the loop then following error is showing :- File "<module1>", line 5 print(sum) ^ IndentationError: unindent does not match any outer indentation level
– Ramona
Nov 18 at 8:30

2

Python forces you to use the correct indentation. Be careful that you have the right amount of spaces/tabs.
– Anton vBR
Nov 18 at 8:31

and dont mix spaces and tabs in python3.x
– Patrick Artner
Nov 18 at 8:57

add a comment |

up vote
6
down vote

favorite

I am using for loop in python to display old value and sum of new value. Following is my code.

numbers = [6, 5, 3, 8, 4, 2, 5, 4, 11]
sum = 0
for val in numbers:

 sum = sum+val
print(sum)

and the output of this loop is showing 48

But i want to show output like

Please let me know what i need to change in my code to display output like this.

asked Nov 18 at 8:25

Ramona

414

New contributor

I am using for loop in python to display old value and sum of new value. Following is my code.

numbers = [6, 5, 3, 8, 4, 2, 5, 4, 11]
sum = 0
for val in numbers:

 sum = sum+val
print(sum)

and the output of this loop is showing 48

But i want to show output like

Please let me know what i need to change in my code to display output like this.

python python-3.x

asked Nov 18 at 8:25

Ramona

414

New contributor

asked Nov 18 at 8:25

Ramona

414

New contributor

asked Nov 18 at 8:25

Ramona

414

New contributor

asked Nov 18 at 8:25

Ramona

414

asked Nov 18 at 8:25

Ramona

414

New contributor

Ramona is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

2

First thing first: Your print statement is outside the loop. This means it will only execute once.
– Anton vBR
Nov 18 at 8:27

@Anton vBR But when i print statement inside the loop then following error is showing :- File "<module1>", line 5 print(sum) ^ IndentationError: unindent does not match any outer indentation level
– Ramona
Nov 18 at 8:30

2

Python forces you to use the correct indentation. Be careful that you have the right amount of spaces/tabs.
– Anton vBR
Nov 18 at 8:31

and dont mix spaces and tabs in python3.x
– Patrick Artner
Nov 18 at 8:57

add a comment |

2

First thing first: Your print statement is outside the loop. This means it will only execute once.
– Anton vBR
Nov 18 at 8:27

@Anton vBR But when i print statement inside the loop then following error is showing :- File "<module1>", line 5 print(sum) ^ IndentationError: unindent does not match any outer indentation level
– Ramona
Nov 18 at 8:30

2

Python forces you to use the correct indentation. Be careful that you have the right amount of spaces/tabs.
– Anton vBR
Nov 18 at 8:31

and dont mix spaces and tabs in python3.x
– Patrick Artner
Nov 18 at 8:57

First thing first: Your print statement is outside the loop. This means it will only execute once.
– Anton vBR
Nov 18 at 8:27

@Anton vBR But when i print statement inside the loop then following error is showing :- File "<module1>", line 5 print(sum) ^ IndentationError: unindent does not match any outer indentation level
– Ramona
Nov 18 at 8:30

Python forces you to use the correct indentation. Be careful that you have the right amount of spaces/tabs.
– Anton vBR
Nov 18 at 8:31

and dont mix spaces and tabs in python3.x
– Patrick Artner
Nov 18 at 8:57

add a comment |

1 Answer
1

active

oldest

votes

up vote
9
down vote

accepted

You could just iterate through elements in list, printing the required in the loop and updating the total:

numbers = [6, 5, 3, 8, 4, 2, 5, 4, 11]

total = numbers[0]
print(f'total')
for val in numbers[1:]:
 print(f'total + val = total + val')
 total += val

# 6
# 6 + 5 = 11
# 11 + 3 = 14 
# 14 + 8 = 22 
# 22 + 4 = 26 
# 26 + 2 = 28 
# 28 + 5 = 33 
# 33 + 4 = 37 
# 37 + 11 = 48

edited Nov 18 at 8:41

answered Nov 18 at 8:29

Austin

8,3663828

1

@AntonvBR You're right sum is an in-built function and shouldn't be used as variable name
– Vishnudev
Nov 18 at 8:32

There should be a printout before the loop
– Mad Physicist
Nov 18 at 8:33

@Austin thanks its working. But one question in my mind. Please let me know what is use of f in print(f'sum + val = sum + val')?
– Ramona
Nov 18 at 8:35

1

@Ramona, They are f-strings in Python, just another way of formatting strings. You can specify variable in and Python will display it's value for you.
– Austin
Nov 18 at 8:36

@Austin. Yes, OP's output shows 6 first
– Mad Physicist
Nov 18 at 8:39

|
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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
9
down vote

accepted

You could just iterate through elements in list, printing the required in the loop and updating the total:

numbers = [6, 5, 3, 8, 4, 2, 5, 4, 11]

total = numbers[0]
print(f'total')
for val in numbers[1:]:
 print(f'total + val = total + val')
 total += val

# 6
# 6 + 5 = 11
# 11 + 3 = 14 
# 14 + 8 = 22 
# 22 + 4 = 26 
# 26 + 2 = 28 
# 28 + 5 = 33 
# 33 + 4 = 37 
# 37 + 11 = 48

edited Nov 18 at 8:41

answered Nov 18 at 8:29

Austin

8,3663828

1

@AntonvBR You're right sum is an in-built function and shouldn't be used as variable name
– Vishnudev
Nov 18 at 8:32

There should be a printout before the loop
– Mad Physicist
Nov 18 at 8:33

@Austin thanks its working. But one question in my mind. Please let me know what is use of f in print(f'sum + val = sum + val')?
– Ramona
Nov 18 at 8:35

1

@Ramona, They are f-strings in Python, just another way of formatting strings. You can specify variable in and Python will display it's value for you.
– Austin
Nov 18 at 8:36

@Austin. Yes, OP's output shows 6 first
– Mad Physicist
Nov 18 at 8:39

|
show 1 more comment

up vote
9
down vote

accepted

You could just iterate through elements in list, printing the required in the loop and updating the total:

numbers = [6, 5, 3, 8, 4, 2, 5, 4, 11]

total = numbers[0]
print(f'total')
for val in numbers[1:]:
 print(f'total + val = total + val')
 total += val

# 6
# 6 + 5 = 11
# 11 + 3 = 14 
# 14 + 8 = 22 
# 22 + 4 = 26 
# 26 + 2 = 28 
# 28 + 5 = 33 
# 33 + 4 = 37 
# 37 + 11 = 48

edited Nov 18 at 8:41

answered Nov 18 at 8:29

Austin

8,3663828

1

@AntonvBR You're right sum is an in-built function and shouldn't be used as variable name
– Vishnudev
Nov 18 at 8:32

There should be a printout before the loop
– Mad Physicist
Nov 18 at 8:33

@Austin thanks its working. But one question in my mind. Please let me know what is use of f in print(f'sum + val = sum + val')?
– Ramona
Nov 18 at 8:35

1

@Ramona, They are f-strings in Python, just another way of formatting strings. You can specify variable in and Python will display it's value for you.
– Austin
Nov 18 at 8:36

@Austin. Yes, OP's output shows 6 first
– Mad Physicist
Nov 18 at 8:39

|
show 1 more comment

up vote
9
down vote

accepted

You could just iterate through elements in list, printing the required in the loop and updating the total:

numbers = [6, 5, 3, 8, 4, 2, 5, 4, 11]

total = numbers[0]
print(f'total')
for val in numbers[1:]:
 print(f'total + val = total + val')
 total += val

# 6
# 6 + 5 = 11
# 11 + 3 = 14 
# 14 + 8 = 22 
# 22 + 4 = 26 
# 26 + 2 = 28 
# 28 + 5 = 33 
# 33 + 4 = 37 
# 37 + 11 = 48

edited Nov 18 at 8:41

answered Nov 18 at 8:29

Austin

8,3663828

You could just iterate through elements in list, printing the required in the loop and updating the total:

numbers = [6, 5, 3, 8, 4, 2, 5, 4, 11]

total = numbers[0]
print(f'total')
for val in numbers[1:]:
 print(f'total + val = total + val')
 total += val

# 6
# 6 + 5 = 11
# 11 + 3 = 14 
# 14 + 8 = 22 
# 22 + 4 = 26 
# 26 + 2 = 28 
# 28 + 5 = 33 
# 33 + 4 = 37 
# 37 + 11 = 48

edited Nov 18 at 8:41

answered Nov 18 at 8:29

Austin

8,3663828

edited Nov 18 at 8:41

answered Nov 18 at 8:29

Austin

8,3663828

answered Nov 18 at 8:29

Austin

8,3663828

answered Nov 18 at 8:29

Austin

8,3663828

1

@AntonvBR You're right sum is an in-built function and shouldn't be used as variable name
– Vishnudev
Nov 18 at 8:32

There should be a printout before the loop
– Mad Physicist
Nov 18 at 8:33

@Austin thanks its working. But one question in my mind. Please let me know what is use of f in print(f'sum + val = sum + val')?
– Ramona
Nov 18 at 8:35

1

@Ramona, They are f-strings in Python, just another way of formatting strings. You can specify variable in and Python will display it's value for you.
– Austin
Nov 18 at 8:36

@Austin. Yes, OP's output shows 6 first
– Mad Physicist
Nov 18 at 8:39

|
show 1 more comment

1

@AntonvBR You're right sum is an in-built function and shouldn't be used as variable name
– Vishnudev
Nov 18 at 8:32

There should be a printout before the loop
– Mad Physicist
Nov 18 at 8:33

@Austin thanks its working. But one question in my mind. Please let me know what is use of f in print(f'sum + val = sum + val')?
– Ramona
Nov 18 at 8:35

1

@Ramona, They are f-strings in Python, just another way of formatting strings. You can specify variable in and Python will display it's value for you.
– Austin
Nov 18 at 8:36

@Austin. Yes, OP's output shows 6 first
– Mad Physicist
Nov 18 at 8:39

@AntonvBR You're right sum is an in-built function and shouldn't be used as variable name
– Vishnudev
Nov 18 at 8:32

There should be a printout before the loop
– Mad Physicist
Nov 18 at 8:33

@Austin thanks its working. But one question in my mind. Please let me know what is use of f in print(f'sum + val = sum + val')?
– Ramona
Nov 18 at 8:35

@Ramona, They are f-strings in Python, just another way of formatting strings. You can specify variable in and Python will display it's value for you.
– Austin
Nov 18 at 8:36

@Austin. Yes, OP's output shows 6 first
– Mad Physicist
Nov 18 at 8:39

|
show 1 more comment

Ramona is a new contributor. Be nice, and check out our Code of Conduct.

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