python - How to make inequality sign and equality sign into a string -


i'm trying make array of strings '<=', '>=' , '='.
code made: 

del_str=np.zeros((nnodes*ndofs),dtype=str)     in range(nnodes*ndofs):         if dels[i]>0:             del_str[i]="<="         elif dels[i]<0:             del_str[i]=">="         else:                           del_str[i]="="

i think should work when check print these:

['=' '=' '=' '=' '=' '=' '<' '>' '<' '>' '>' '<' '>' '>' '>' '>' '>' '>' '>' '>' '>' '>' '>' '>' '>' '>' '>' '>' '=' '=' '=' '=' '<' '>']

where did go wrong?? tried these:

del_str=np.zeros((nnodes*ndofs),dtype=str)     in range(nnodes*ndofs):         if dels[i]>0:             del_str[i]="<"+"="         elif dels[i]<0:             del_str[i]=">"+"="         else:                           del_str[i]="="

but still doesn't work. please let me know i'm missing..

your datatype allows 1 character stored. try:

del_str = np.zeros((nnodes*ndofs), dtype='|s2')

demo:

dtype=str:

>>> del_str = np.zeros(10, dtype=str) >>> del_str array(['', '', '', '', '', '', '', '', '', ''],        dtype='|s1') >>> del_str[0] = '<=' >>> del_str array(['<', '', '', '', '', '', '', '', '', ''],        dtype='|s1')

dtype='|s2':

>>> del_str = np.zeros(10, dtype='|s2') >>> del_str array(['', '', '', '', '', '', '', '', '', ''],        dtype='|s2') >>> del_str[0] = '<=' >>> del_str array(['<=', '', '', '', '', '', '', '', '', ''],        dtype='|s2')

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