How to left align the columns

[SriRajesh]

Hi,

I have the below code, and I store data in str. Now I want to print this str using left align. I use below code but it is not left-aligned.

my_list= ['1','4','6']
result = ''
for i in range(len(my_list)):
    if int(my_list[i]) < 3:
        print(my_list[i])
        result = result +'\n'+ "[INFO] " +"Failed case"+ "Fail" +' 12'
    elif int(my_list[i]) >=4 and int(my_list[i]) <6:
        result = result +'\n'+ "[INFO] " + "Success case" + "Pass" +'  122'
    else:
        result = result +'\n'+ "[INFO] " + "unsuccess case" + "Pass" +' 0'
        
print(result)

current output:

[INFO] Failed caseFail 12
[INFO] Success casePass   122
[INFO] unsuccess casePass 0

Desired output:

[INFO] Failed caseFail    12
[INFO] Success casePass   122
[INFO] unsuccess casePass 0

[snippsat]

Use string formatting,now should use f-string.
It look a lot nicer without all those +.
{12:^8} center alignment this is stuff that only work in string formatting.
A couple of other changes,like using enumerate and convert to list integers first.

my_list= ['1','4','6']
my_list = [int(i) for i in my_list]
result = ''
for i,item in enumerate(my_list):
    if my_list[i] < 3:
        result = result + f'\n[INFO] Failed case Fail {12:^8}'
    elif my_list[i] >= 4 and my_list[i] < 6:
        result = result + f'\n[INFO] Success case Pass {122:^8}'
    else:
        result = result + f'\n[INFO] unsuccess case Pass 0'

print(result)

Output:
[INFO] Failed case Fail    12   
[INFO] Success case Pass   122   
[INFO] unsuccess case Pass 0

[SriRajesh]

but why we only use:^8 for two cases, and did not use "unsuccess case Pass 0". If it is a big string, then we can not check with an eyeball. any general form?

[snippsat]

This is very static case as it's just strings with different size,and no insert of variables from the loop.
Could probably had rewrite code a little if look more into it.

Here some example with < ^ > alignment in a loop.

for i in range(3,13):
    print(f"{i:<6} {i*i:<6} {i*i*i:<6}")
print('-'*20)
for i in range(3,13):
    print(f"{i:^6} {i*i:^6} {i*i*i:^6}")
print('-'*20)
for i in range(3,13):
    print(f"{i:>6} {i*i:10} {i*i*i:<6}")

Output:
3      9      27    
4      16     64    
5      25     125   
6      36     216   
7      49     343   
8      64     512   
9      81     729   
10     100    1000  
11     121    1331  
12     144    1728  
--------------------
  3      9      27  
  4      16     64  
  5      25    125  
  6      36    216  
  7      49    343  
  8      64    512  
  9      81    729  
  10    100    1000 
  11    121    1331 
  12    144    1728 
--------------------
     3          9 27    
     4         16 64    
     5         25 125   
     6         36 216   
     7         49 343   
     8         64 512   
     9         81 729   
    10        100 1000  
    11        121 1331  
    12        144 1728

[SriRajesh]

#%%
max_width = 15
a = ''
for i in range(3,8):
    if i <5:
        print(f"{'Pass':<15} {'Par':<15} {'Failcase':<15}")
        a =a+'-1'+","
    else:
        print(f"{'PassFail':<15} {'Par':<15} {'FailFP':<15}")
        #print('-'*20)
        a =a+'1'+","

I am appending 1, or -1 on each iteration to 'a'. But, I don't want to print coma at the end. Second, instead of define 15, can I define max_width, and replace 15 with max_width. as below. I tried but I am getting error.ValueError: Invalid format specifier .

#%%
max_width = 15
a = ''
for i in range(3,8):
    if i <5:
        print(f"{'Pass':<15} {'Par':<max_widht} {'Failcase':<max_widrh}")
        a =a+'-1'+","
    else:
        print(f"{'PassFail':<max_width} {'Par':<max_width} {'FailFP':<max_width}")
        #print('-'*20)
        a =a+'1'+","

[snippsat]

As value max_width is coming in from outside,most use {max_width}.

max_width = 15
a = ''
for i in range(3,8):
    if i < 5:
        print(f"{'Pass':<{max_width}} {'Par':<{max_width}} {'Failcase':<{max_width}}")
        a = a + '-1' + ","
print(a.strip(','))

Output:
Pass            Par             Failcase       
Pass            Par             Failcase       
-1,-1

[SriRajesh]

I have string 0,0,-1
from below output:

but when I printa.count('1') it printing 1 but I don't want to consider -1, how to count only '1' not excluding '-1'.

#%%
max_width = 15
a = ''
for i in range(3,6):
    if i < 2:
        print(f"{'Pass':<15} {'Par':<15} {'Failcase':<15}")
        a =a + '1' +","
    elif i >= 5 and i <= 7:
        print(f"{'PassFail':<15} {'Par':<15} {'FailFP':<15}")
        #print('-'*20)
        a = a + '-1' + ","
    else:
        print(f"{'PassFail':<15} {'Par':<15} {'FailFP':<15}")
        #print('-'*20)
        a = a + '0'+ ","
    print(a)

if a.count('-1') > 0:
    print('-1')
elif a.count('1') > 0:
    print('1')
else:
    print('0')