CODEWITHSUNDEEP
pythonpython-3.x
user3319565
user3319565

Reputation: 171

Python strict string replacement

I need to replace rownum and rownum_ in "My num is rownum, your is rownum_" using placeholderdict = {rownum:20, rownum_:25}.

When I tried, it gets replaced like "My num is 20, yours is 20_" . Expected is "My num is 20, yours is 25"

Please share some tips.

Upvotes: 1

Views: 279

Answers (3)

mateo
mateo

Reputation: 89

Through Formatting, you can put it in {} that you want the value there. If there is no name in {} then it will be in order, and you can also specify a value by name.

placeholderdict = {'rownum':20, 'rownum_':25}

print('My num is {rownum}, your is {rownum_}.'.format(rownum = placeholderdict.get('rownum'),
                                                      rownum_ = placeholderdict.get('rownum_')))

you can also save to value

text = 'My num is {rownum}, your is {rownum_}.'.format(rownum = placeholderdict.get('rownum'),
                                                      rownum_ = placeholderdict.get('rownum_'))
print(text)

Upvotes: 0

adir abargil
adir abargil

Reputation: 5745

You probably replaced first “rownun“ and it replaced the “rownum_” Into 20_, just change the order it will fix your issue...

text = text.replace('rownum_', placeholderdict['rownum_'])
text = text.replace('rownum', placeholderdict['rownum'])
print(text)
>>> My num is 20, yours is 25

Upvotes: 1

ppwater
ppwater

Reputation: 2277

You can do this:

placeholderdict = {"rownum":20, "rownum_":25}
string = "My num is rownum, your is rownum_"
string = string.replace("rownum", str(placeholderdict["rownum"]), 1)
string = string.replace("rownum_", str(placeholderdict["rownum_"]))
print(string)

Add a string.replace and add ,1 to control the numbers of changing text. and add str().

And your dictionary keys have to be a string because rownum and rownum_ is not defined.

Upvotes: 0

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