#This is my PYTHON program
st='';
word='';
i=k=length=int();
print ("Please enter string (up to 70 characters):");
st=input();
if len(st)<=70:
    print("My string was:\n", st);
else:
    print("Your string is too long");
    st = st[:70];
    print("My string was\n", st);
for symbol in ['.', ',', '!', '?', ':', ';', '-', '(', ')', '"', "'"]:
    st = st.replace(symbol, '');
word='';
k=0;
for i in range (0,len(st),1):
    if st[i]!=' ':
        word=word+st[i];
    else:
        length=len(word);
        if length==4:
            k=k+1;
        word='';
length=len(word);
if length==4:
    k=k+1;
print(f"k=",k);

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

RWFjaCBjb2RlIHBhcnQgbXVzdCB3b3JrIGZpbmUsIG9yIGJ1Z3Mgd2lsbCBzdG9wIHRoZSBmbG93Lg==

Each code part must work fine, or bugs will stop the flow.