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I have my instructions in the top of my code. But for some reason when I input a decimal and then return my error message like it is supposed to then I input a valid amount it prints everything twice, once for the valid input then once for the valid input here is what i am getting(below bottom).

```
01
"""
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withdraw_money()
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a. prompt user for a money amount in US Dollars (no cents, i.e. no
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fractional part allowed)
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b. print a preamble which says that user will see the breakdown of the
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money in banknotes
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c. print maximum number of $100 bills that can be given for the amount
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given by user
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d. print maximum number of $50 bills that can be given for the amount left
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over from previous step
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e. print maximum number of $20 bills that can be given for the amount left
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over from previous step
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f. print maximum number of $10 bills that can be given for the amount left
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over from previous step
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g. print maximum number of $5 bills that can be given for the amount left
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over from previous step
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h. print maximum number of $2 bills that can be given for the amount
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left over from previous step
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i. print maximum number of $1 bills that can be given for the amount left
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over from previous step
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"""
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import math
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import string
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def withdraw_money():
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withdraw = 0
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hundreds = 0
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fifty = 0
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twenty = 0
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ten = 0
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five = 0
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two = 0
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one = 0
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withdraw = input("Input the amount you would like to withdraw\n--> ")
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while withdraw >= 100:
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hundreds += 1
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withdraw -= 100
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while withdraw >= 50:
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fifty += 1
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withdraw -= 50
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while withdraw >= 20:
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twenty += 1
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withdraw -= 20
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while withdraw >= 10:
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ten += 1
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withdraw -= 10
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while withdraw >= 5:
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five += 1
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withdraw -= 5
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while withdraw >= 2:
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two += 1
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withdraw -= 2
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while withdraw >= 1:
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one += 1
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withdraw -= 1
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if withdraw < 1 and withdraw > 0:
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print "invalid input"
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print "do not insert a decimal"
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withdraw_money()
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print "Here is the bill breakdown for the amount input"
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print hundreds, "number of 100s"
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print fifty, "number of 50s"
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print twenty, "number of 20s"
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print ten, "number of 10s"
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print five, "number of 5s"
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print two, "number of 2s"
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print one, "number of 1s"
```

and what it is giving me

```
01
>>>
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Input the amount you would like to withdraw
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--> 200.30
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invalid input
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do not insert a decimal
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Input the amount you would like to withdraw
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--> 253
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Here is the bill breakdown for the amount input
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2 number of 100s
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1 number of 50s
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0 number of 20s
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0 number of 10s
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0 number of 5s
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1 number of 2s
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1 number of 1s
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Here is the bill breakdown for the amount input
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2 number of 100s
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0 number of 50s
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0 number of 20s
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0 number of 10s
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0 number of 5s
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0 number of 2s
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0 number of 1s
```

*Edited
by pritaeas*: Moved to Python.